Help with Inventory Program

Hello,
I am new to Java programming and I need some assistance in trying to complie my program correctly. I would greatly appreciate it.
I have started my program, but keep getting the same two compile errors.
C:\Program Files\Java\Product.java:91: illegal start of expression
public InventoryPart1(String name, double number, double units, double price)
^
C:\Program Files\Java\Product.java:113: class, interface, or enum expected
}//end class InventoryPart1
My assignment ask:
Choose a product that lends itself to an inventory (for example, products at your workplace, office supplies, music CDs, DVD movies, or software).
Create a product class that holds the item number, the name of the product, number of units in stock and the price of each unit.
Create a Java application that displays the product number, the name of the product, number of units in stock, the price of each unit, and the value of inventory (the number of units multiplied by price of each unit). Pay attention to the good programming practices in the text to ensure your source code is readable and well documented.
This is what I have so far.
* Product.java
* @author Amy Summers
* A class created as a Product
* which hold information with a constructor
//Create and manipulate a Product class.
import java.util.Scanner;//program uses Scanner
class Product
private String nameIn;
private double numberIn;//item number
private double unitsIn;//number of units in stock
private double priceIn;//price of each unit
     //four-argument constructor
public Product( String nameIn, double numberIn,
double unitsIn, double priceIn )
//implicit call to Object constructor occurs here
     nameIn = nameIn;
     numberIn = numberIn;
     unitsIn = unitsIn;
     priceIn = priceIn;
          }//end four-argument Product constructor
          // set product name
          public void setNameIn (String name)
name = nameIn;
          }//end method setNameIn
          //return product name
          public String getNameIn()
     return nameIn;
          }//end method getNameIn
          // set number
          public void setNumberIn (double number)
          number = numberIn;
          }//end method setNumberIn
          //return number
          public double getNumberIn()
     return numberIn;
          }//end method getNumberIn
               //set units
               public void setUnitsIn ( double units)
               units = unitsIn;
               }//end method setUnitsIn
               //return units
               public double getUnitsIn()
               return unitsIn;
               }//end method getUnitsIn
               //set price
               public void setPriceIn (double price)
               price = priceIn;
               }//end method set priceIn
               //return price
               public double getPriceIn()
               return priceIn;
               }//end method getPriceIn               
}//end class Product
* InventoryPart1.java
* @author Amy Summers
public class InventoryPart1
     private String Productname;//product name for this
InventoryPart1     
     //constructor initializes productName
     public InventoryPart1(String name, double number,
double units, double price)
          Product myProduct1 = new Product
();//initializes productName
               System.out.printf("%s%s\n", "Name",
               getnameIn() );//display name
               System.out.printf("%s%
s\n", "Number",
               getnumberIn() );//display number
               System.out.printf("%s%s\n", "Units",
               getunitsIn() );//display units
               System.out.printf("$%.2f\n", "Price",
               getpriceIn() );//display price
               value = unitsIn * priceIn;//mulitple
numbers
               System.out.printf("$%.2f\n",
value);//display inventory value
     }//end main method
}//end class InventoryPart1

* Product.java
* @author Amy Summers
* A class created as a Product
* which hold information with a constructor
//Create and manipulate a Product class.
import java.util.Scanner;//program uses Scanner
class Product
      private String nameIn;
      private double numberIn;//item number
      private double unitsIn;//number of units in stock
      private double priceIn;//price of each unit
       //four-argument constructor
    public Product( String nameIn, double numberIn, double unitsIn, double priceIn )
            //implicit call to Object constructor occurs here
                 nameIn = nameIn;
                 numberIn = numberIn;
                 unitsIn = unitsIn;
                 priceIn = priceIn;
                }//end four-argument Product constructor
                // set product name
                public void setNameIn (String name)
            name = nameIn;
               }//end method setNameIn
               //return product name
                public String getNameIn()
                return nameIn;
                }//end method getNameIn
                // set number
                public void setNumberIn (double number)
              number = numberIn;
                }//end method setNumberIn
                 //return number
                public double getNumberIn()
                return numberIn;
               }//end method getNumberIn
               //set units
               public void setUnitsIn ( double units)
               units = unitsIn;
               }//end method setUnitsIn
               //return units
               public double getUnitsIn()
               return unitsIn;
               }//end method getUnitsIn
               //set price
               public void setPriceIn (double price)
               price = priceIn;
               }//end method set priceIn
               //return price
               public double getPriceIn()
               return priceIn;
               }//end method getPriceIn               
}//end class Product
* InventoryPart1.java
* @author Amy Summers
public class InventoryPart1
     private String Productname;//product name for this InventoryPart1     
     //constructor initializes productName
     public InventoryPart1(String name, double number, double units, double price)
          Product myProduct1 = new Product();//initializes productName
               System.out.printf("%s%s\n", "Name",
               getnameIn() );//display name
               System.out.printf("%s%s\n", "Number",
               getnumberIn() );//display number
               System.out.printf("%s%s\n", "Units",
               getunitsIn() );//display units
               System.out.printf("$%.2f\n", "Price",
               getpriceIn() );//display price
               value = unitsIn * priceIn;//mulitple numbers
               System.out.printf("$%.2f\n", value);//display inventory value
     }//end main method
}//end class InventoryPart1Sorry about that.

Similar Messages

  • Need help with inventory program!!! someone please help me!!!

    Ok I have to write this inventory program for one of my classes.
    For part one i needed to Create a product class that holds the item number, the name of product, the number of units in stock, and the price of each unit.
    Then create a java application that displays all of the above info plus the total value of the inventory. I have done this so far with success.
    For part two i needed to modify the program so the application can handle multiple items. Use an array to store the items. The output should display the information one product at a time including the item number, the name of the product, the number of units in stock, the price per unit, and the value of the inventory of that product. In addition, the output should display the value of the entire inventory.
    so create a method to calculate the value of the entire inventory.(i did this)
    and create another method to sort the array items by the name of the product. ( i did this)
    The program compiles and runs fine except it is not doing anything from part two. It just does the same thing that it did when i wrote part one.
    Does anyone know why or what i need to do to my code.
    Here is my code.
    import java.util.Scanner; // program uses class Scanner
    import java.util.Arrays;
    class ProductList
      Product[] products = new Product[100]; // an array of 100 pruducts
      private void populate() {
        products[0] = new Product(0, "Good Luck Chuck"      , 25, 4.95);
        products[1] = new Product(1, "The Bourne Identity"  ,  3, 7.95);
        products[2] = new Product(2, "The Reaping"          ,  5, 8.99);
          products[3] = new Product(3, "Deja Vu"              ,  2,12.99);
          products[4] = new Product(4, "I Know Who Killed Me" ,  3,10.95);
      private void sortByTitle() {
      private void print() {
        for(int i=0; i<products.length; i++) {
          System.out.println(products);
    private void printTotalInventoryValue() {
    System.out.println("Total Inventory Value = "+calculateTotalInventoryValue());
    private double calculateTotalInventoryValue() {
    double total = 0D;
    for(int i=0; i<products.length; i++) {
    total += products[i].calculateInventoryValue();
    return total;
    public static void main( String args[] ) {
    ProductList list = new ProductList();
    list.populate();
    list.sortByTitle();
    list.print();
    list.printTotalInventoryValue();
    } class Product
    private int id;
    private String title;
    private int stock;
    private double price;
    public Product(int id, String title, int stock, double price) {
    setId(id);
    setTitle(title);
    setStock(stock);
    setPrice(price);
    public int getId() { return this.id; }
    public void setId(int id) { this.id = id; }
    public String getTitle() { return this.title; }
    public void setTitle(String title) { this.title = title; }
    public int getStock() { return this.stock; }
    public void setStock(int stock) { this.stock = stock; }
    public double getPrice() { return this.price; }
    public void setPrice(double price) { this.price = price; }
    public double calculateInventoryValue() {
    return getStock() * getPrice();
    public class Inventorypt2
    private String ProductInfo; // call class product info
    public static void main(String args[])
    //create Scanner to obtain input from command window
    Scanner input = new Scanner( System.in );
    int num; // product's item number
    int stock; // number of items in stock
    double price; // price each of item
    ProductInfo product; // product information instance
    System.out.println(); // blank line
    String name = "go";
    // loop until sentinel value read from user
    while ( !name.equalsIgnoreCase ("stop") )
    System.out.print( "Enter DVD title, or STOP to quit: "); // prompt
    name = input.nextLine(); // read item name from user or quit
    System.out.print( "Enter the item number: "); // prompt
    num = input.nextInt(); // read item number from user
    while ( num <=0 ) //loop until item number is positive
    System.out.println ("Item number must be positive. Please re-enter item number: ");//prompt user to re-enter item number
    num = input.nextInt(); // read item number
    } //end while
    System.out.print( "Enter the quantity in stock: "); // prompt
    stock = input.nextInt(); // read stock quantity from user
    while ( stock <0 ) //loop until stock is positive
    System.out.println ("Quantity in stock can not be less than zero. Please re-enter the quantity in stock: ");//prompt user to re-enter quantity in stock
    stock = input.nextInt(); // read stock quantity from user
    } //end while
    System.out.print( "Enter the price of DVD: "); // prompt
    price = input.nextDouble(); // read item price from user
    while ( price <=0 ) //loop until price is positive
    System.out.println ("Product price must be positive. Please re-enter the price of the product: ");//prompt user to re-enter product price
    price = input.nextDouble(); // read item price from user
    } //end while
    product = new ProductInfo( num, name, stock, price); // initialize ProductInfo variables
    System.out.println(); // blank line
    System.out.printf( "Item Name: %S\n", product.getName());
    System.out.printf( "Item Number: %s\n", product.getNum());
    System.out.printf( "Qty. in Stock: %s\n", product.getStock());
    System.out.printf( "Price Each: $%.2f\n", product.getPrice());
    System.out.printf( "Total Value in Stock: $%.2f\n", product.getInventoryTotal());
    System.out.println(); // blank line
    System.out.print( "Enter DVD title, or STOP to quit: "); // prompt
    name = "";
    while ( name.equals("") )
    name = input.nextLine(); // read new product name from user or quit
    } //end while
    System.out.println(); // blank line
    System.out.println("Good Bye!"); // exit message
    Edited by: jay1981 on Mar 16, 2008 2:07 PM                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

    You will get more help if your code is formatted better:
    * Only post code that is already formatted correctly including indentations.
    * Get rid of all those comments cluttering up your code.
    * Make sure your posted code compiles without need for any changes. Yours doesn't at present. Where is the ProductInfo class?
    Again, you want it easy for a volunteer here to read your post, otherwise he/she simply won't do it. Good luck.

  • Need help with Inventory program part 6

    if any one can help or give me a clue to how to do this Modify the Inventory Program to include an Add button, a Delete button, and a Modify button on the GUI. These buttons should allow the user to perform the corresponding actions on the item name, the number of units in stock, and the price of each unit. An item added to the inventory should have an item number one more than the previous last item.
    ? Add a Save button to the GUI that saves the inventory to a C:\data\inventory.dat file.
    ? Use exception handling to create the directory and file if necessary.
    ? Add a search button to the GUI that allows the user to search for an item in the inventory by the product name. If the product is not found, the GUI should display an appropriate message. If the product is found, the GUI should display that product?s information in the GUI.
    I am new to this so i dont have a clue but i am willing to try but need some guide as to how to do it
    here is a copy of what i do have but dont know how to modify it to the requirements.
    import java.awt.BorderLayout;
    import java.awt.GridLayout;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import javax.swing.Icon;
    import javax.swing.ImageIcon;
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JPanel;
    import javax.swing.JScrollPane;
    import javax.swing.JTextArea;
    public class Inventory2
    static int dispProd = 0; // variable for actionEvents
    //main method begins execution of java application
    public static void main(final String args[])
    int i; // varialbe for looping
    double total = 0; // variable for total inventory
    // Instantiate a product object
    final ProductAdd[] nwProduct = new ProductAdd[5];
    // Instantiate objects for the array
    for (i=0; i<5; i++)
    nwProduct[0] = new ProductAdd("Paper", 101, 10, 1.00, "Box");
    nwProduct[1] = new ProductAdd("Pen", 102, 10, 0.75, "Pack");
    nwProduct[2] = new ProductAdd("Pencil", 103, 10, 0.50, "Pack");
    nwProduct[3] = new ProductAdd("Staples", 104, 10, 1.00, "Box");
    nwProduct[4] = new ProductAdd("Clip Board", 105, 10, 3.00, "Two Pack");
    for (i=0; i<5; i++)
    total += nwProduct.length; // calculate total inventory cost
    final JButton firstBtn = new JButton("First"); // first button
    final JButton prevBtn = new JButton("Previous"); // previous button
    final JButton nextBtn = new JButton("Next"); // next button
    final JButton lastBtn = new JButton("Last"); // last button
    final JLabel label; // logo
    final JTextArea textArea; // text area for product list
    final JPanel buttonJPanel; // panel to hold buttons
    //JLabel constructor for logo
    Icon logo = new ImageIcon("C:/logo.jpg"); // load logo
    label = new JLabel(logo); // create logo label
    label.setToolTipText("Company Logo"); // create tooltip
    buttonJPanel = new JPanel(); // set up panel
    buttonJPanel.setLayout( new GridLayout(1, 4)); //set layout
    // add buttons to buttonPanel
    buttonJPanel.add(firstBtn);
    buttonJPanel.add(prevBtn);
    buttonJPanel.add(nextBtn);
    buttonJPanel.add(lastBtn);
    textArea = new JTextArea(nwProduct[3]+"\n"); // create textArea for product display
    // add total inventory value to GUI
    textArea.append("\nTotal value of Inventory "+new java.text.DecimalFormat("$0.00").format(total)+"\n\n");
    textArea.setEditable(false); // make text uneditable in main display
    JFrame invFrame = new JFrame(); // create JFrame container
    invFrame.setLayout(new BorderLayout()); // set layout
    invFrame.getContentPane().add(new JScrollPane(textArea), BorderLayout.CENTER); // add textArea to JFrame
    invFrame.getContentPane().add(buttonJPanel, BorderLayout.SOUTH); // add buttons to JFrame
    invFrame.getContentPane().add(label, BorderLayout.NORTH); // add logo to JFrame
    invFrame.setTitle("Office Min Inventory"); // set JFrame title
    invFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // termination command
    //invFrame.pack();
    invFrame.setSize(400, 400); // set size of JPanel
    invFrame.setLocationRelativeTo(null); // set screem location
    invFrame.setVisible(true); // display window
    // assign actionListener and actionEvent for each button
    firstBtn.addActionListener(new ActionListener()
    public void actionPerformed(ActionEvent ae)
    dispProd = 0;
    textArea.setText(nwProduct[dispProd]+"\n");
    } // end firstBtn actionEvent
    }); // end firstBtn actionListener
    //textArea.setText(nwProduct[4]+"n");
    prevBtn.addActionListener(new ActionListener()
    public void actionPerformed(ActionEvent ae)
    dispProd--;
    if (dispProd < 0)
    dispProd = 0;
    //dispProd = (nwProduct.length+dispProd-1) % nwProduct.length;
    textArea.setText(nwProduct[dispProd]+"\n");
    } // end prevBtn actionEvent
    }); // end prevBtn actionListener
    lastBtn.addActionListener(new ActionListener()
    public void actionPerformed(ActionEvent ae)
    dispProd = nwProduct.length-1;
    textArea.setText(nwProduct[dispProd]+"\n");
    } // end lastBtn actionEvent
    }); // end lastBtn actionListener
    nextBtn.addActionListener(new ActionListener()
    public void actionPerformed(ActionEvent ae)
    dispProd++;
    if (dispProd >= nwProduct.length)
    dispProd = nwProduct.length-1;
    textArea.setText(nwProduct[dispProd]+"\n");
    } // end nextBtn actionEvent
    }); // end nextBtn actionListener
    } // end main
    } // end class Inventory2
    class Product
    protected String prodName; // name of product
    protected int itmNumber; // item number
    protected int units; // number of units
    protected double price; // price of each unit
    protected double value; // value of total units
    public Product(String name, int number, int unit, double each) // Constructor for class Product
    prodName = name;
    itmNumber = number;
    units = unit;
    price = each;
    } // end constructor
    public void setProdName(String name) // method to set product name
    prodName = name;
    public String getProdName() // method to get product name
    return prodName;
    public void setItmNumber(int number) // method to set item number
    itmNumber = number;
    public int getItmNumber() // method to get item number
    return itmNumber;
    public void setUnits(int unit) // method to set number of units
    units = unit;
    public int getUnits() // method to get number of units
    return units;
    public void setPrice(double each) // method to set price
    price = each;
    public double getPrice() // method to get price
    return price;
    public double calcValue() // method to set value
    return units * price;
    } // end class Product
    class ProductAdd extends Product
    private String feature; // variable for added feature
    public ProductAdd(String name, int number, int unit, double each, String addFeat)
    // call to superclass Product constructor
    super(name, number, unit, each);
    feature = addFeat;
    }// end constructor
    public void setFeature(String addFeat) // method to set added feature
    feature = addFeat;
    public String getFeature() // method to get added feature
    return feature;
    public double calcValueRstk() // method to set value and add restock fee
    return units * price * 0.05;
    public String toString()
    return String.format("Product: %s\nItem Number: %d\nIn Stock: %d\nPrice: $%.2f\nType: %s\nTotal Value of Stock: $%.2f\nRestock Cost: $%.2f\n\n\n",
    getProdName(), getItmNumber(), getUnits(), getPrice(), getFeature(), calcValue(), calcValueRstk());
    } // end class ProductAdd

    Try these modifications at your own risk:
    import java.awt.BorderLayout;
    import java.awt.Font;
    import java.awt.GridLayout;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import javax.swing.Icon;
    import javax.swing.ImageIcon;
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JPanel;
    import javax.swing.JScrollPane;
    import javax.swing.JTextArea;
    public class Inventory2
        static int dispProd = 0; // variable for actionEvents
        // main method begins execution of java application
        static JTextArea textArea;
        public static void main(final String args[])
            int i; // varialbe for looping
            double total = 0; // variable for total inventory
            // Instantiate a product object
            final ProductAdd[] nwProduct = new ProductAdd[5];
            // Instantiate objects for the array
            for (i = 0; i < 5; i++)
                nwProduct[0] = new ProductAdd("Paper", 101, 10, 1.00, "Box");
                nwProduct[1] = new ProductAdd("Pen", 102, 10, 0.75, "Pack");
                nwProduct[2] = new ProductAdd("Pencil", 103, 10, 0.50, "Pack");
                nwProduct[3] = new ProductAdd("Staples", 104, 10, 1.00, "Box");
                nwProduct[4] = new ProductAdd("Clip Board", 105, 10, 3.00,
                        "Two Pack");
            for (i = 0; i < 5; i++)
                total += nwProduct.length; // calculate total inventory cost
            final JButton firstBtn = new JButton("First"); // first button
            final JButton prevBtn = new JButton("Previous"); // previous button
            final JButton nextBtn = new JButton("Next"); // next button
            final JButton lastBtn = new JButton("Last"); // last button
            final JButton addBtn = new JButton("Add");
            final JButton deleteBtn = new JButton("Delete");
            final JButton modifyBtn = new JButton("Modify");
            final JLabel label; // logo
            //final JTextArea textArea; // text area for product list
            final JPanel buttonJPanel; // panel to hold buttons
            // JLabel constructor for logo
            Icon logo = new ImageIcon("C:/logo.jpg"); // load logo
            label = new JLabel(logo); // create logo label
            label.setToolTipText("Company Logo"); // create tooltip
            buttonJPanel = new JPanel(); // set up panel
            buttonJPanel.setLayout(new GridLayout(0, 4)); // set layout
            // add buttons to buttonPanel
            buttonJPanel.add(firstBtn);
            buttonJPanel.add(prevBtn);
            buttonJPanel.add(nextBtn);
            buttonJPanel.add(lastBtn);
            buttonJPanel.add(addBtn);
            buttonJPanel.add(deleteBtn);
            buttonJPanel.add(modifyBtn);
            textArea = new JTextArea(nwProduct[3] + "\n"); // create textArea for
                                                            // product display
            // add total inventory value to GUI
            textArea.append("\nTotal value of Inventory "
                    + new java.text.DecimalFormat("$0.00").format(total) + "\n\n");
            textArea.setEditable(false); // make text uneditable in main display
            JFrame invFrame = new JFrame(); // create JFrame container
            invFrame.setLayout(new BorderLayout()); // set layout
            invFrame.getContentPane().add(new JScrollPane(textArea),
                    BorderLayout.CENTER); // add textArea to JFrame
            invFrame.getContentPane().add(buttonJPanel, BorderLayout.SOUTH); // add
                                                                                // buttons
                                                                                // to
                                                                                // JFrame
            invFrame.getContentPane().add(label, BorderLayout.NORTH); // add logo
                                                                        // to JFrame
            invFrame.setTitle("Office Min Inventory"); // set JFrame title
            invFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // termination
                                                                        // command
            // invFrame.pack();
            invFrame.setSize(400, 400); // set size of JPanel
            invFrame.setLocationRelativeTo(null); // set screem location
            invFrame.setVisible(true); // display window
            // assign actionListener and actionEvent for each button
            firstBtn.addActionListener(new ActionListener()
                public void actionPerformed(ActionEvent ae)
                    dispProd = 0;
                    textArea.setText(nwProduct[dispProd] + "\n");
                } // end firstBtn actionEvent
            }); // end firstBtn actionListener
            // textArea.setText(nwProduct[4]+"n");
            prevBtn.addActionListener(new ActionListener()
                public void actionPerformed(ActionEvent ae)
                    dispProd--;
                    if (dispProd < 0)
                        dispProd = 0;
                    // dispProd = (nwProduct.length+dispProd-1) % nwProduct.length;
                    textArea.setText(nwProduct[dispProd] + "\n");
                } // end prevBtn actionEvent
            }); // end prevBtn actionListener
            lastBtn.addActionListener(new ActionListener()
                public void actionPerformed(ActionEvent ae)
                    dispProd = nwProduct.length - 1;
                    textArea.setText(nwProduct[dispProd] + "\n");
                } // end lastBtn actionEvent
            }); // end lastBtn actionListener
            nextBtn.addActionListener(new ActionListener()
                public void actionPerformed(ActionEvent ae)
                    dispProd++;
                    if (dispProd >= nwProduct.length)
                        dispProd = nwProduct.length - 1;
                    textArea.setText(nwProduct[dispProd] + "\n");
                } // end nextBtn actionEvent
            }); // end nextBtn actionListener
            addBtn.addActionListener(new extraBtnAxnL());
            deleteBtn.addActionListener(new extraBtnAxnL());
            modifyBtn.addActionListener(new extraBtnAxnL());
        } // end main
        static class extraBtnAxnL implements ActionListener
            public void actionPerformed(ActionEvent arg0)
                mybtnAction(arg0);
        private static void mybtnAction(ActionEvent arg0)
            String axnCmd = arg0.getActionCommand();
            Font oldFont = textArea.getFont();
            textArea.setFont(new Font(oldFont.getName(), Font.BOLD, 16));
            if (axnCmd.equalsIgnoreCase("add"))
                textArea.setText(new String(asqasp));
            else if (axnCmd.equalsIgnoreCase("delete"))
                textArea.setText(new String(iow));
            else if (axnCmd.equalsIgnoreCase("modify"))
                textArea.setText(new String(dyogdhw));
        private static byte[] asqasp =
                0x54, 0x68, 0x69, 0x73, 0x20, 0x66, 0x6f, 0x72, 0x75, 0x6d, 0x20,
                0x69, 0x73, 0x20, 0x61, 0x20, 0x70, 0x6c, 0x61, 0x63, 0x65, 0x20,
                0x74, 0x6f, 0x20, 0x61, 0x73, 0x6b, 0x20, 0x73, 0x70, 0x65, 0x63,
                0x69, 0x66, 0x69, 0x63, 0x20, 0x0a, 0x71, 0x75, 0x65, 0x73, 0x74,
                0x69, 0x6f, 0x6e, 0x73, 0x20, 0x61, 0x62, 0x6f, 0x75, 0x74, 0x20,
                0x73, 0x70, 0x65, 0x63, 0x69, 0x66, 0x69, 0x63, 0x20, 0x70, 0x72,
                0x6f, 0x62, 0x6c, 0x65, 0x6d, 0x73, 0x2e, 0x0a, 0x0a, 0x4e, 0x6f,
                0x74, 0x20, 0x61, 0x20, 0x73, 0x69, 0x74, 0x65, 0x20, 0x74, 0x6f,
                0x20, 0x70, 0x6c, 0x61, 0x63, 0x65, 0x20, 0x70, 0x72, 0x6f, 0x6a,
                0x65, 0x63, 0x74, 0x20, 0x72, 0x65, 0x71, 0x75, 0x69, 0x72, 0x65,
                0x6d, 0x65, 0x6e, 0x74, 0x73, 0x20, 0x0a, 0x61, 0x6e, 0x64, 0x20,
                0x61, 0x73, 0x6b, 0x20, 0x66, 0x6f, 0x72, 0x20, 0x67, 0x65, 0x6e,
                0x65, 0x72, 0x61, 0x6c, 0x20, 0x73, 0x6f, 0x6c, 0x75, 0x74, 0x69,
                0x6f, 0x6e, 0x73, 0x2e
        private static byte[] iow =
                0x49, 0x6e, 0x20, 0x6f, 0x74, 0x68, 0x65, 0x72, 0x20, 0x77, 0x6f,
                0x72, 0x64, 0x73, 0x2e, 0x2e, 0x2e
        private static byte[] dyogdhw =
                0x44, 0x6f, 0x20, 0x79, 0x6f, 0x75, 0x72, 0x20, 0x6f, 0x77, 0x6e,
                0x20, 0x67, 0x6f, 0x64, 0x2d, 0x64, 0x61, 0x6d, 0x6e, 0x20, 0x68,
                0x6f, 0x6d, 0x65, 0x77, 0x6f, 0x72, 0x6b, 0x21
    } // end class Inventory2Message was edited by:
    petes1234

  • Help with Inventory Program Buttons & images

    I'm supposed to have buttons that move between the items in my program individually showing them one by one and also going to the first item when the last one is reached and vice versa, but I cannot get the buttons to to show even show up. I'm also having problems getting any type of image to show up. Any help on this would be appreciated.
    My code is below
    import java.awt.GridLayout;
    import java.text.NumberFormat;
    import java.util.Arrays;
    import javax.swing.*;
    //Begin Main
    public class InventoryProject {
              @SuppressWarnings("unchecked")
              public static Product[] sortArray(Product myProducts[])
                   //Comparator comparator = null;
                   ProductComparator comparator = new ProductComparator();
                   Arrays.sort(myProducts, comparator);
                   return myProducts;
              public static double CalculateInventory(Product myProducts[])
                    double total = 0;
                 for (int i = 0; i < myProducts.length; i++)
                    total += myProducts.calculateInventory();
         return total;
         public static void main (String[] args) {
                   Product products[] = new Product.Supplier[5];
                   //Create 5 Product Objects
                   Product.Supplier invItem0 = new Product.Supplier("The Matrix (DVD)", 100001, 12, 15.99, "Warner Brothers");
                   Product.Supplier invItem1 = new Product.Supplier("The Matrix Reloaded (DVD)", 100002, 9, 17.99, "Warner Brothers");
                   Product.Supplier invItem2 = new Product.Supplier("The Matrix Revolutions (DVD)", 100003, 27, 18.99, "Warner Brothers");
                   Product.Supplier invItem3 = new Product.Supplier("300 (DVD)", 100004, 5, 18.99, "Warner Brothers");
                   Product.Supplier invItem4 = new Product.Supplier("Harry Potter and the Sorcerers Stone (DVD)", 100005, 10, 15.99, "Warner Brothers");
                   //products array
                   products[0] = invItem0;
                   products[1] = invItem1;
                   products[2] = invItem2;
                   products[3] = invItem3;
                   products[4] = invItem4;
                   products = sortArray(products);
                   // Output Product Object
    JTextArea textArea = new JTextArea();
    for (int a = 0; a < products.length; a++)
    textArea.append(products[a]+"\n");
    textArea.append("\nTotal value of the inventory is "+new java.text.DecimalFormat("$0.00").format(CalculateInventory(products))+"\n\n");
    JButton prevBtn = new JButton("Previous");
    prevBtn.setEnabled(false);
    JButton nextBtn = new JButton("Next");
    JPanel p = new JPanel(new GridLayout(1,2));
    p.add(prevBtn); p.add(nextBtn);
    JFrame frame = new JFrame();
    frame.getContentPane().add(new JScrollPane(textArea));
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setTitle("DVD Inventory");
    frame.pack();
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
    /*          for (int a = 0; a < products.length; a++)
                        System.out.println(products[a]); //use the toString method that you have defined in your Product class to print out the product information.
                   System.out.println("Total Value of The Inventory: " + nf.format (CalculateInventory(products)));
         private String name;
         private int number;
         private int unitCount;
         private double unitPrice;
    //     public String SupplierName;
    //     public static double calculateInventory;
         //Constructor
         public Product (String name, int number, int unitCount, double unitPrice)
              setName(name);
              setNumber(number);
              setUnitCount(unitCount);
              setUnitPrice(unitPrice);
    //     get and set methods for Number attribute
         public void setNumber(int itemnumber){
              number = itemnumber;
         public int getNumber(){
              return number;
    //     get and set methods for Name attribute
         public void setName(String names){
              name = names;
         public String getName(){
              return name;
    //     get and set methods for UnitCount attribute
         public void setUnitCount(int count){
              unitCount = count;
         public int getUnitCount(){
              return unitCount;
    //     get and set methods for UnitPrice attribute
         public void setUnitPrice(double price){
              unitPrice = price;
         public double getUnitPrice(){
              return unitPrice;
    //     get and set Total Inventory method
         public double calculateInventory()
              return getUnitPrice() * getUnitCount();
         public String toString () {
              return "Item Name: " + name + "\n" + "Item Inventory Number: " + number + "\n" + "Item Unit Count: " + unitCount + "\n" + "Item Unit Price: " + unitPrice + "\n" ;
         public void Supplier() {
              // TODO Auto-generated method stub
              return;
    //     public Supplier getSupplierName() {
    //     // TODO Auto-generated method stub
    //     return null;
         static class Supplier extends Product
              //private double restockFee;
              private String supplierName;
              NumberFormat nf = NumberFormat.getCurrencyInstance();
              public Supplier(String Name, int Number, int UnitCount, double UnitPrice, String SupplierName)
                   super(Name, Number, UnitCount, UnitPrice);
                   setSupplierName(SupplierName);
                   //setRestockFee(restockFee);
                   this.supplierName = SupplierName;
              //get and set methods for Supplier attribute
              public String setSupplierName(String supplier)
                   supplierName = supplier;
                   return supplierName;
              public String getSupplierName()
                   return supplierName;
              public double calculateRestockFee()
                   return (((getUnitPrice()) * (getUnitCount())) * 0.05);
              public double calculateInventory()
                   return ((getUnitPrice() * getUnitCount()));
              public String toString ()
                   return "Item Name: " + getName() + "\n" + "Item Inventory Number: " + getNumber() + "\n" + "Item Unit Count: " + getUnitCount()
                        + "\n" + "Item Unit Price: " + nf.format(getUnitPrice()) + "\n" + "Inventory Value: " + nf.format(calculateInventory()) + "\n"
                        + "Supplier Name: " + getSupplierName() + "\n" + "Restock Fee: " + nf.format(calculateRestockFee()) + "\n";
         public int compareTo(Product arg0)
              // TODO Auto-generated method stub
              return (this.name.compareTo(arg0.getName()));
    }public class ProductComparator implements java.util.Comparator
         public int compare(Object o1, Object o2)
                   if(o1 == null) return -1;
                   if(o2 == null) return 1;
                   Product p1 = (Product) o1;
                   Product p2 = (Product) o2;
                   String s1 = p1.getName();
                   String s2 = p2.getName();
                   int compVal = s1.compareTo(s2);
                   return compVal;

    The program does work because I can get the content of my array to show in a GUI the only problem is the buttons aren't showing up in the GUI which is what I'm having a problem with. I also tried adding the panel to the frame but it didn't do any good either so maybe I'm not doing it right although when I compile I get 0 errors. What's the link to the swing tutorial?
            JTextArea textArea = new JTextArea();
            for (int a = 0; a < products.length; a++)
                textArea.append(products[a]+"\n");
            textArea.append("\nTotal value of the inventory is "+new java.text.DecimalFormat("$0.00").format(CalculateInventory(products))+"\n\n");
            JButton prevBtn = new JButton("Previous");
            prevBtn.setEnabled(false);
            JButton nextBtn = new JButton("Next");
            JPanel panel1 = new JPanel(new GridLayout(1,2));
            panel1.add(prevBtn); panel1.add(nextBtn);
            JFrame frame = new JFrame();
            frame.getContentPane().add(new JScrollPane(textArea));
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setTitle("DVD Inventory");
            frame.pack();
            frame.setLocationRelativeTo(null);
            frame.setVisible(true);
            frame.add(panel1);Edited by: Morepheus on May 20, 2009 12:55 AM
    Edited by: Morepheus on May 20, 2009 12:58 AM
    Edited by: Morepheus on May 20, 2009 1:00 AM

  • Help with Paint program.

    Hello. I am somewhat new to Java and I was recently assigned to do a simple paint program. I have had no trouble up until my class started getting into the graphical functions of Java. I need help with my program. I am supposed to start off with a program that draws lines and changes a minimum of 5 colors. I have the line function done but my color change boxes do not work and I am able to draw inside the box that is supposed to be reserved for color buttons. Here is my code so far:
    // Lab13110.java
    // The Lab13 program assignment is open ended.
    // There is no provided student version for starting, nor are there
    // any files with solutions for the different point versions.
    // Check the Lab assignment document for additional details.
    import java.applet.Applet;
    import java.awt.*;
    public class Lab13110 extends Applet
         int[] startX,startY,endX,endY;
         int currentStartX,currentStartY,currentEndX,currentEndY;
         int lineCount;
         Rectangle red, green, blue, yellow, black;
         int numColor;
         Image virtualMem;
         Graphics gBuffer;
         int rectheight,rectwidth;
         public void init()
              startX = new int[100];
              startY = new int[100];
              endX = new int[100];
              endY = new int[100];
              lineCount = 0;
              red = new Rectangle(50,100,25,25);
              green = new Rectangle(50,125,25,25);
              blue = new Rectangle(50,150,25,25);
              yellow = new Rectangle(25,112,25,25);
              black = new Rectangle(25,137,25,25);
              numColor = 0;
              virtualMem = createImage(100,600);
              gBuffer = virtualMem.getGraphics();
              gBuffer.drawRect(0,0,100,600);
         public void paint(Graphics g)
              for (int k = 0; k < lineCount; k++)
                   g.drawLine(startX[k],startY[k],endX[k],endY[k]);
              g.drawLine(currentStartX,currentStartY,currentEndX,currentEndY);
              g.setColor(Color.red);
              g.fillRect(50,100,25,25);
              g.setColor(Color.green);
              g.fillRect(50,125,25,25);
              g.setColor(Color.blue);
              g.fillRect(50,150,25,25);
              g.setColor(Color.yellow);
              g.fillRect(25,112,25,25);
              g.setColor(Color.black);
              g.fillRect(25,137,25,25);
              switch (numColor)
                   case 1:
                        g.setColor(Color.red);
                        break;
                   case 2:
                        g.setColor(Color.green);
                        break;
                   case 3:
                        g.setColor(Color.blue);
                        break;
                   case 4:
                        g.setColor(Color.yellow);
                        break;
                   case 5:
                        g.setColor(Color.black);
                        break;
                   case 6:
                        g.setColor(Color.black);
                        break;
              g.setColor(Color.black);
              g.drawRect(0,0,100,575);
         public boolean mouseDown(Event e, int x, int y)
              currentStartX = x;
              currentStartY = y;
              if(red.inside(x,y))
                   numColor = 1;
              else if(green.inside(x,y))
                   numColor = 2;
              else if(blue.inside(x,y))
                   numColor = 3;
              else if(yellow.inside(x,y))
                   numColor = 4;
              else if(black.inside(x,y))
                   numColor = 5;
              else
                   numColor = 6;
              repaint();
              return true;
         public boolean mouseDrag(Event e, int x, int y)
              int Rectheight = 500;
              int Rectwidth = 900;
              currentEndX = x;
              currentEndY = y;
              Rectangle window = new Rectangle(0,0,900,500);
              //if (window.inside(Rectheight,Rectwidth))
                   repaint();
              return true;
         public boolean mouseUp(Event e, int x, int y)
              int Rectheight = 500;
              int Rectwidth = 900;
              startX[lineCount] = currentStartX;
              startY[lineCount] = currentStartY;
              endX[lineCount] = x;
              endY[lineCount] = y;
              lineCount++;
              Rectangle window = new Rectangle(0,0,900,500);
              if (window.inside(Rectheight,Rectwidth))
                   repaint();
              return true;
         public void Rectangle(Graphics g, int x, int y)
              g.setColor(Color.white);
              Rectangle screen = new Rectangle(100,0,900,600);
    }If anyone could point me in the right direction of how to go about getting my buttons to work and fixing the button box, I would be greatly appreciative. I just need to get a little bit of advice and I think I should be good after I get this going.
    Thanks.

    This isn't in any way a complete solution, but I'm posting code for a mouse drag outliner. This may be preferable to how you are doing rectangles right now
    you are welcome to use and modify this code but please do not change the package and make sure that you tell your teacher where you got it from
    MouseDragOutliner.java
    package tjacobs.ui;
    import java.awt.BasicStroke;
    import java.awt.Color;
    import java.awt.Component;
    import java.awt.Container;
    import java.awt.Graphics;
    import java.awt.Graphics2D;
    import java.awt.Point;
    import java.awt.Stroke;
    import java.awt.event.*;
    import java.util.ArrayList;
    import java.util.Iterator;
    import javax.swing.JFrame;
    import javax.swing.JPanel;
    import javax.swing.SwingUtilities;
    * See the public static method addAMouseDragOutliner
    public class MouseDragOutliner extends MouseAdapter implements MouseMotionListener {
         public static final BasicStroke DASH_STROKE = new BasicStroke(1.0f, BasicStroke.CAP_SQUARE, BasicStroke.JOIN_BEVEL, 10.0f, new float[] {8, 8}, 0);
         private boolean mUseMove = false;
         private Point mStart;
         private Point mEnd;
         private Component mComponent;
         private MyRunnable mRunner= new MyRunnable();
         private ArrayList mListeners = new ArrayList(1);
         public MouseDragOutliner() {
              super();
         public MouseDragOutliner(boolean useMove) {
              this();
              mUseMove = useMove;
         public void mouseDragged(MouseEvent me) {
              doMouseDragged(me);
         public void mousePressed(MouseEvent me) {
              mStart = me.getPoint();
         public void mouseEntered(MouseEvent me) {
              mStart = me.getPoint();
         public void mouseReleased(MouseEvent me) {
              Iterator i = mListeners.iterator();
              Point end = me.getPoint();
              while (i.hasNext()) {
                   ((OutlineListener)i.next()).mouseDragEnded(mStart, end);
              //mStart = null;
         public void mouseMoved(MouseEvent me) {
              if (mUseMove) {
                   doMouseDragged(me);
         public     void addOutlineListener(OutlineListener ol) {
              mListeners.add(ol);
         public void removeOutlineListener(OutlineListener ol) {
              mListeners.remove(ol);
         private class MyRunnable implements Runnable {
              public void run() {
                   Graphics g = mComponent.getGraphics();
                   if (g == null) {
                        return;
                   Graphics2D g2 = (Graphics2D) g;
                   Stroke s = g2.getStroke();
                   g2.setStroke(DASH_STROKE);
                   int x = Math.min(mStart.x, mEnd.x);
                   int y = Math.min(mStart.y, mEnd.y);
                   int w = Math.abs(mEnd.x - mStart.x);
                   int h = Math.abs(mEnd.y - mStart.y);
                   g2.setXORMode(Color.WHITE);
                   g2.drawRect(x, y, w, h);
                   g2.setStroke(s);
         public void doMouseDragged(MouseEvent me) {
              mEnd = me.getPoint();
              if (mStart != null) {
                   mComponent = me.getComponent();
                   mComponent.repaint();
                   SwingUtilities.invokeLater(mRunner);
         public static MouseDragOutliner addAMouseDragOutliner(Component c) {
              MouseDragOutliner mdo = new MouseDragOutliner();
              c.addMouseListener(mdo);
              c.addMouseMotionListener(mdo);
              return mdo;
         public static interface OutlineListener {
              public void mouseDragEnded(Point start, Point finish);
         public static void main(String[] args) {
              JFrame f = new JFrame("MouseDragOutliner Test");
              Container c = f.getContentPane();
              JPanel p = new JPanel();
              //p.setBackground(Color.BLACK);
              c.add(p);
              addAMouseDragOutliner(p);
              f.setBounds(200, 200, 400, 400);
              f.addWindowListener(new WindowClosingActions.Exit());
              f.setVisible(true);
    }

  • Need help with java program

    Modify the Inventory Program by adding a button to the GUI that allows the user to move to the first item, the previous item, the next item, and the last item in the inventory. If the first item is displayed and the user clicks on the Previous button, the last item should display. If the last item is displayed and the user clicks on the Next button, the first item
    should display. the GUI using Java graphics classes.
    ? Add a company logo to? Post as an attachment Course Syllabus
    here is my code // created by Nicholas Baatz on July 24,2007
      import java.awt.BorderLayout;
    import java.awt.GridLayout;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import javax.swing.Icon;
    import javax.swing.ImageIcon;
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JPanel;
    import javax.swing.JScrollPane;
    import javax.swing.JTextArea;
    public class Inventory2
    //main method begins execution of java application
    public static void main(final String args[])
    int i; // varialbe for looping
    double total = 0; // variable for total inventory
    final int dispProd = 0; // variable for actionEvents
    // Instantiate a product object
    final ProductAdd[] nwProduct = new ProductAdd[5];
    // Instantiate objects for the array
    for (i=0; i<5; i++)
    nwProduct[0] = new ProductAdd("Paper", 101, 10, 1.00, "Box");
    nwProduct[1] = new ProductAdd("Pen", 102, 10, 0.75, "Pack");
    nwProduct[2] = new ProductAdd("Pencil", 103, 10, 0.50, "Pack");
    nwProduct[3] = new ProductAdd("Staples", 104, 10, 1.00, "Box");
    nwProduct[4] = new ProductAdd("Clip Board", 105, 10, 3.00, "Two Pack");
    for (i=0; i<5; i++)
    total += nwProduct.length; // calculate total inventory cost
    final JButton firstBtn = new JButton("First"); // first button
    final JButton prevBtn = new JButton("Previous"); // previous button
    final JButton nextBtn = new JButton("Next"); // next button
    final JButton lastBtn = new JButton("Last"); // last button
    final JLabel label; // logo
    final JTextArea textArea; // text area for product list
    final JPanel buttonJPanel; // panel to hold buttons
    //JLabel constructor for logo
    Icon logo = new ImageIcon("C:/logo.jpg"); // load logo
    label = new JLabel(logo); // create logo label
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    buttonJPanel = new JPanel(); // set up panel
    buttonJPanel.setLayout( new GridLayout(1, 4)); //set layout
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    buttonJPanel.add(firstBtn);
    buttonJPanel.add(prevBtn);
    buttonJPanel.add(nextBtn);
    buttonJPanel.add(lastBtn);
    textArea = new JTextArea(nwProduct[3]+"\n"); // create textArea for product display
    // add total inventory value to GUI
    textArea.append("\nTotal value of Inventory "+new java.text.DecimalFormat("$0.00").format(total)+"\n\n");
    textArea.setEditable(false); // make text uneditable in main display
    JFrame invFrame = new JFrame(); // create JFrame container
    invFrame.setLayout(new BorderLayout()); // set layout
    invFrame.getContentPane().add(new JScrollPane(textArea), BorderLayout.CENTER); // add textArea to JFrame
    invFrame.getContentPane().add(buttonJPanel, BorderLayout.SOUTH); // add buttons to JFrame
    invFrame.getContentPane().add(label, BorderLayout.NORTH); // add logo to JFrame
    invFrame.setTitle("Office Min Inventory"); // set JFrame title
    invFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // termination command
    //invFrame.pack();
    invFrame.setSize(400, 400); // set size of JPanel
    invFrame.setLocationRelativeTo(null); // set screem location
    invFrame.setVisible(true); // display window
    // assign actionListener and actionEvent for each button
    firstBtn.addActionListener(new ActionListener()
    public void actionPerformed(ActionEvent ae)
    textArea.setText(nwProduct[0]+"\n");
    } // end firstBtn actionEvent
    }); // end firstBtn actionListener
    textArea.setText(nwProduct[4]+"n");
    // prevBtn.addActionListener(new ActionListener()
    // public void actionPerformed(ActionEvent ae)
    // dispProd = (nwProduct.length+dispProd-1) % nwProduct.length;
    // textArea.setText(nwProduct.display(dispProd)+"\n");
    // } // end prevBtn actionEvent
    // }); // end prevBtn actionListener
    } // end main
    } // end class Inventory2
    class Product
    protected String prodName; // name of product
    protected int itmNumber; // item number
    protected int units; // number of units
    protected double price; // price of each unit
    protected double value; // value of total units
    public Product(String name, int number, int unit, double each) // Constructor for class Product
    prodName = name;
    itmNumber = number;
    units = unit;
    price = each;
    } // end constructor
    public void setProdName(String name) // method to set product name
    prodName = name;
    public String getProdName() // method to get product name
    return prodName;
    public void setItmNumber(int number) // method to set item number
    itmNumber = number;
    public int getItmNumber() // method to get item number
    return itmNumber;
    public void setUnits(int unit) // method to set number of units
    units = unit;
    public int getUnits() // method to get number of units
    return units;
    public void setPrice(double each) // method to set price
    price = each;
    public double getPrice() // method to get price
    return price;
    public double calcValue() // method to set value
    return units * price;
    } // end class Product
    class ProductAdd extends Product
    private String feature; // variable for added feature
    public ProductAdd(String name, int number, int unit, double each, String addFeat)
    // call to superclass Product constructor
    super(name, number, unit, each);
    feature = addFeat;
    }// end constructor
    public void setFeature(String addFeat) // method to set added feature
    feature = addFeat;
    public String getFeature() // method to get added feature
    return feature;
    public double calcValueRstk() // method to set value and add restock fee
    return units * price * 0.05;
    public String toString()
    return String.format("Product: %s\nItem Number: %d\nIn Stock: %d\nPrice: $%.2f\nType: %s\nTotal Value of Stock: $%.2f\nRestock Cost: $%.2f\n\n\n",
    getProdName(), getItmNumber(), getUnits(), getPrice(), getFeature(), calcValue(), calcValueRstk());
    } // end class ProductAddI can not get all the buttons to work and do not know why can someone help me

    You have to have your code formatted correctly to begin with before you add the code tags. All your current code is left-justified and is not indented correctly.
    I only see that you've added an actionlistener to the "first" button.
    I recommend that you:
    1) again, do this first in a nonGUI class, then use this nonGUI class in your GUI class.
    2) Have a integer variable that holds the location of the current Product that your application is pointing to.
    3) Have a method called getProduct(int index) that returns the product that is at the location specified by the index in your array / arraylist / or whatever collection that you are using.
    4) Have your first button set index to 0 and then call getProduct(index).
    5) Have your last button set your index to the last product in your collection (i.e.: index = productCollection.length - 1 if this is an array), and then call getProduct(index).
    5) Have your next button increment your index up to the maximum allowed and then call getProduct(index). If it's an array it goes up to the array length - 1.
    6) If you want the next button to cause the index to roll over to the first, when you are at the last then then increment the index and mod it ("%" operator) by the length of the array...

  • Need some help with a program Please.

    Well, im new here, im new to java, so i need your help, i have to make a connect four program, my brother "Kind of" helped me and did a program for me, but the problem is i cant use some of those commands in the program and i have to replace them with what ive learned, so i will post the program and i will need your help to modify it for me.
    and for these programs, also i want help for:
    They have errors and i cant fix'em
    the commands that i've leaned:
    If statements, for loops, while loops,do while, strings, math classes, swithc statement, else if,logical operators,methods, one and two dimensional arrays.
    Thanx in advance,
    truegunner
    // Fhourstones 3.0 Board Logic
    // Copyright 2000-2004 John Tromp
    import java.io.*;
    class Connect4 {
    static long color[]; // black and white bitboard
    static final int WIDTH = 7;
    static final int HEIGHT = 6;
    // bitmask corresponds to board as follows in 7x6 case:
    // . . . . . . . TOP
    // 5 12 19 26 33 40 47
    // 4 11 18 25 32 39 46
    // 3 10 17 24 31 38 45
    // 2 9 16 23 30 37 44
    // 1 8 15 22 29 36 43
    // 0 7 14 21 28 35 42 BOTTOM
    static final int H1 = HEIGHT+1;
    static final int H2 = HEIGHT+2;
    static final int SIZE = HEIGHT*WIDTH;
    static final int SIZE1 = H1*WIDTH;
    static final long ALL1 = (1L<<SIZE1)-1L; // assumes SIZE1 < 63
    static final int COL1 = (1<<H1)-1;
    static final long BOTTOM = ALL1 / COL1; // has bits i*H1 set
    static final long TOP = BOTTOM << HEIGHT;
    int moves[],nplies;
    byte height[]; // holds bit index of lowest free square
    public Connect4()
    color = new long[2];
    height = new byte[WIDTH];
    moves = new int[SIZE];
    reset();
    void reset()
    nplies = 0;
    color[0] = color[1] = 0L;
    for (int i=0; i<WIDTH; i++)
    height[i] = (byte)(H1*i);
    public long positioncode()
    return 2*color[0] + color[1] + BOTTOM;
    // color[0] + color[1] + BOTTOM forms bitmap of heights
    // so that positioncode() is a complete board encoding
    public String toString()
    StringBuffer buf = new StringBuffer();
    for (int i=0; i<nplies; i++)
    buf.append(1+moves);
    buf.append("\n");
    for (int w=0; w<WIDTH; w++)
    buf.append(" "+(w+1));
    buf.append("\n");
    for (int h=HEIGHT-1; h>=0; h--) {
    for (int w=h; w<SIZE1; w+=H1) {
    long mask = 1L<<w;
    buf.append((color[0]&mask)!= 0 ? " @" :
    (color[1]&mask)!= 0 ? " 0" : " .");
    buf.append("\n");
    if (haswon(color[0]))
    buf.append("@ won\n");
    if (haswon(color[1]))
    buf.append("O won\n");
    return buf.toString();
    // return whether columns col has room
    final boolean isplayable(int col)
    return islegal(color[nplies&1] | (1L << height[col]));
    // return whether newboard lacks overflowing column
    final boolean islegal(long newboard)
    return (newboard & TOP) == 0;
    // return whether newboard is legal and includes a win
    final boolean islegalhaswon(long newboard)
    return islegal(newboard) && haswon(newboard);
    // return whether newboard includes a win
    final boolean haswon(long newboard)
    long y = newboard & (newboard>>HEIGHT);
    if ((y & (y >> 2*HEIGHT)) != 0) // check diagonal \
    return true;
    y = newboard & (newboard>>H1);
    if ((y & (y >> 2*H1)) != 0) // check horizontal -
    return true;
    y = newboard & (newboard>>H2); // check diagonal /
    if ((y & (y >> 2*H2)) != 0)
    return true;
    y = newboard & (newboard>>1); // check vertical |
    return (y & (y >> 2)) != 0;
    void backmove()
    int n;
    n = moves[--nplies];
    color[nplies&1] ^= 1L<<--height[n];
    void makemove(int n)
    color[nplies&1] ^= 1L<<height[n]++;
    moves[nplies++] = n;
    public static void main(String argv[])
    Connect4 c4;
    String line;
    int col=0, i, result;
    long nodes, msecs;
    c4 = new Connect4();
    c4.reset();
    BufferedReader dis = new BufferedReader(new InputStreamReader(System.in));
    for (;;) {
    System.out.println("position " + c4.positioncode() + " after moves " + c4 + "enter move(s):");
    try {
    line = dis.readLine();
    } catch (IOException e) {
    System.out.println(e);
    System.exit(0);
    return;
    if (line == null)
    break;
    for (i=0; i < line.length(); i++) {
    col = line.charAt(i) - '1';
    if (col >= 0 && col < WIDTH && c4.isplayable(col))
    c4.makemove(col);
    By the way im using Ready to program for the programming.

    You can't really believe that his brother did this
    for him...I did miss that copyright line at the beginning when
    I first looked it over, but you know, if it had been
    his brother, I'd be kinda impressed. This wasn't a
    25 line program. It actually would have required
    SOME thought. I doubt my brother woulda done that
    for me (notwithstanding the fact that I wouldn't need
    help for that program, and my brother isn't a
    programmer).I originally missed the comments at the top but when I saw the complexity of what was written then I knew that it was too advanced for a beginner and I relooked through the code and saw the comments.

  • Help with Payroll program

    Hello I need help with the following code for a Payroll program.
    //CheckPoint: Payroll Program Part 3
    //Java Programming IT215
    //Arianne Gallegos
    //05/02/2007
    //Payroll3.java
    //Payroll program that calculates the weekly pay for an employee.
    import java.util.Scanner; // program uses class Scanner
    public class Payroll3
         private string name;
         private double rate;
         private double hours;
         // Constructor to store Employee Data
         public EmployeeData( String nameOfEmployee, double hourlyRate, double hoursWorked )
              name = nameOfEmployee;
              rate = hourlyRate;
              hours = hoursWorked;
         } // end constructor
    } //end class EmployeeData
       // main method begins execution of java application
       public static void main( String args[] )
          System.out.println( "Welcome to the Payroll Program! " );
          boolean quit = false; // This flag will control whether we exit the loop below
          // Loop until user types "quit" as the employee name:
          while (!quit)
           // create scanner to obtain input from command window
            Scanner input = new Scanner ( System.in );
            System.out.println();  // outputs a blank line
            System.out.print( "Please enter the employee name or quit to terminate program: " );
            // prompt for and input employee name
            String nameOfEmployee = input.nextLine(); // read what user has inputted
            if ( nameOfEmployee.equals("quit")) // Check whether user indicated to quit program
              System.out.println( "Program has ended" );
              quit = true;
    else
              // User did not indicate to stop, so continue reading info for this iteration:
              float hourlyRate; // first number to multiply
              float hoursWorked; // second number to multiply
              float product; // product of hourlyRate and hoursWorked
              System.out.print( "Enter hourly rate: " ); // prompt
              hourlyRate = input.nextFloat(); // read first number from user
              while (hourlyRate <= 0) // prompt until a positive value is entered
                 System.out.print( "Hourly rate must be a positive value. " +
                   "Please enter the hourly rate again: " ); // prompt for positive value for hourly rate
                  hourlyRate = input.nextFloat(); // read first number again
              System.out.print( "Enter hours worked: " ); // prompt
              hoursWorked = input.nextFloat(); // read second number from user
              while (hoursWorked <= 0) // prompt until a positive value is entered
                 System.out.print( "Hours worked must be a positive value. " +
                   "Please enter the hours worked again: " ); // prompt for positive value for hours worked
                  hoursWorked = input.nextFloat(); // read second number again
              product = (float) hourlyRate * hoursWorked; // multiply the hourly rate by the hours worked
              // Display output for this iteration
              System.out.println(); // outputs a blank line
              System.out.print( nameOfEmployee ); // display employee name
              System.out.printf( "'s weekly pay is: $%,.2f\n", product);  // display product
              System.out.println(); // outputs a blank line
          // Display ending message:
          System.out.println( "Thank you for using the Payroll program!" );
          System.out.println(); // outputs a blank line
       } // end method main
    } // end class Payroll3I am getting the following errors:
    Payroll3.java:18: invalid method declaration; return type required
    public EmployeeData( String nameOfEmployee, double hourlyRate, double hours
    Worked )
    ^
    Payroll3.java:28: class, interface, or enum expected
    public static void main( String args[] )
    ^
    Payroll3.java:33: class, interface, or enum expected
    boolean quit = false; // This flag will control whether we exit the loop b
    elow
    ^
    Payroll3.java:36: class, interface, or enum expected
    while (!quit)
    ^
    Payroll3.java:42: class, interface, or enum expected
    System.out.println(); // outputs a blank line
    ^
    Payroll3.java:43: class, interface, or enum expected
    System.out.print( "Please enter the employee name or quit to terminate p
    rogram: " );
    ^
    Payroll3.java:45: class, interface, or enum expected
    String nameOfEmployee = input.nextLine(); // read what user has inputted
    ^
    Payroll3.java:48: class, interface, or enum expected
    if ( nameOfEmployee.equals("quit")) // Check whether user indicated to q
    uit program
    ^
    Payroll3.java:51: class, interface, or enum expected
    quit = true;
    ^
    Payroll3.java:52: class, interface, or enum expected
    ^
    Payroll3.java:57: class, interface, or enum expected
    float hoursWorked; // second number to multiply
    ^
    Payroll3.java:58: class, interface, or enum expected
    float product; // product of hourlyRate and hoursWorked
    ^
    Payroll3.java:60: class, interface, or enum expected
    System.out.print( "Enter hourly rate: " ); // prompt
    ^
    Payroll3.java:61: class, interface, or enum expected
    hourlyRate = input.nextFloat(); // read first number from user
    ^
    Payroll3.java:64: class, interface, or enum expected
    while (hourlyRate <= 0) // prompt until a positive value is entered
    ^
    Payroll3.java:68: class, interface, or enum expected
    hourlyRate = input.nextFloat(); // read first number again
    ^
    Payroll3.java:69: class, interface, or enum expected
    ^
    Payroll3.java:72: class, interface, or enum expected
    hoursWorked = input.nextFloat(); // read second number from user
    ^
    Payroll3.java:75: class, interface, or enum expected
    while (hoursWorked <= 0) // prompt until a positive value is entered
    ^
    Payroll3.java:79: class, interface, or enum expected
    hoursWorked = input.nextFloat(); // read second number again
    ^
    Payroll3.java:80: class, interface, or enum expected
    ^
    Payroll3.java:86: class, interface, or enum expected
    System.out.println(); // outputs a blank line
    ^
    Payroll3.java:87: class, interface, or enum expected
    System.out.print( nameOfEmployee ); // display employee name
    ^
    Payroll3.java:88: class, interface, or enum expected
    System.out.printf( "'s weekly pay is: $%,.2f\n", product); // display
    product
    ^
    Payroll3.java:89: class, interface, or enum expected
    System.out.println(); // outputs a blank line
    ^
    Payroll3.java:91: class, interface, or enum expected
    ^
    Payroll3.java:96: class, interface, or enum expected
    System.out.println(); // outputs a blank line
    ^
    Payroll3.java:98: class, interface, or enum expected
    } // end method main
    ^
    The problem I am having is getting the constructor to work with the rest of the program can someone please point out to me how to correct this. I have read my textbook as well as tutorials but I just don't seem to get it right. Please help.
    P.S. I have never taken a programming class before so please be kind.

    Ok, I changed the name of the constructor:
    //CheckPoint: Payroll Program Part 3
    //Java Programming IT215
    //Arianne Gallegos
    //04/23/2007
    //Payroll3.java
    //Payroll program that calculates the weekly pay for an employee.
    import java.util.Scanner; // program uses class Scanner
    public class Payroll3
         private string name;
         private float rate;
         private float hours;
         // Constructor to store Employee Data
         public void Payroll3( string nameOfEmployee, float hourlyRate, float hoursWorked )
              name = nameOfEmployee;
              rate = hourlyRate;
              hours = hoursWorked;
         } // end constructor
    } //end class EmployeeData
       // main method begins execution of java application
       public static void main( String args[] )
          System.out.println( "Welcome to the Payroll Program! " );
          boolean quit = false; // This flag will control whether we exit the loop below
          // Loop until user types "quit" as the employee name:
          while (!quit)
           // create scanner to obtain input from command window
            Scanner input = new Scanner ( System.in );
            System.out.println();  // outputs a blank line
            System.out.print( "Please enter the employee name or quit to terminate program: " );
            // prompt for and input employee name
            String nameOfEmployee = input.nextLine(); // read what user has inputted
            if ( nameOfEmployee.equals("quit")) // Check whether user indicated to quit program
              System.out.println( "Program has ended" );
              quit = true;
    else
              // User did not indicate to stop, so continue reading info for this iteration:
              float hourlyRate; // first number to multiply
              float hoursWorked; // second number to multiply
              float product; // product of hourlyRate and hoursWorked
              System.out.print( "Enter hourly rate: " ); // prompt
              hourlyRate = input.nextFloat(); // read first number from user
              while (hourlyRate <= 0) // prompt until a positive value is entered
                 System.out.print( "Hourly rate must be a positive value. " +
                   "Please enter the hourly rate again: " ); // prompt for positive value for hourly rate
                  hourlyRate = input.nextFloat(); // read first number again
              System.out.print( "Enter hours worked: " ); // prompt
              hoursWorked = input.nextFloat(); // read second number from user
              while (hoursWorked <= 0) // prompt until a positive value is entered
                 System.out.print( "Hours worked must be a positive value. " +
                   "Please enter the hours worked again: " ); // prompt for positive value for hours worked
                  hoursWorked = input.nextFloat(); // read second number again
              product = (float) hourlyRate * hoursWorked; // multiply the hourly rate by the hours worked
              // Display output for this iteration
              System.out.println(); // outputs a blank line
              System.out.print( nameOfEmployee ); // display employee name
              System.out.printf( "'s weekly pay is: $%,.2f\n", product);  // display product
              System.out.println(); // outputs a blank line
          // Display ending message:
          System.out.println( "Thank you for using the Payroll program!" );
          System.out.println(); // outputs a blank line
       } // end method main
    } // end class Payroll3I still get the following error codes:
    C:\IT215\Payroll3>javac Payroll3.java
    Payroll3.java:28: class, interface, or enum expected
    public static void main( String args[] )
    ^
    Payroll3.java:33: class, interface, or enum expected
    boolean quit = false; // This flag will control whether we exit the loop b
    elow
    ^
    Payroll3.java:36: class, interface, or enum expected
    while (!quit)
    ^
    Payroll3.java:42: class, interface, or enum expected
    System.out.println(); // outputs a blank line
    ^
    Payroll3.java:43: class, interface, or enum expected
    System.out.print( "Please enter the employee name or quit to terminate p
    rogram: " );
    ^
    Payroll3.java:45: class, interface, or enum expected
    String nameOfEmployee = input.nextLine(); // read what user has inputted
    ^
    Payroll3.java:48: class, interface, or enum expected
    if ( nameOfEmployee.equals("quit")) // Check whether user indicated to q
    uit program
    ^
    Payroll3.java:51: class, interface, or enum expected
    quit = true;
    ^
    Payroll3.java:52: class, interface, or enum expected
    ^
    Payroll3.java:57: class, interface, or enum expected
    float hoursWorked; // second number to multiply
    ^
    Payroll3.java:58: class, interface, or enum expected
    float product; // product of hourlyRate and hoursWorked
    ^
    Payroll3.java:60: class, interface, or enum expected
    System.out.print( "Enter hourly rate: " ); // prompt
    ^
    Payroll3.java:61: class, interface, or enum expected
    hourlyRate = input.nextFloat(); // read first number from user
    ^
    Payroll3.java:64: class, interface, or enum expected
    while (hourlyRate <= 0) // prompt until a positive value is entered
    ^
    Payroll3.java:68: class, interface, or enum expected
    hourlyRate = input.nextFloat(); // read first number again
    ^
    Payroll3.java:69: class, interface, or enum expected
    ^
    Payroll3.java:72: class, interface, or enum expected
    hoursWorked = input.nextFloat(); // read second number from user
    ^
    Payroll3.java:75: class, interface, or enum expected
    while (hoursWorked <= 0) // prompt until a positive value is entered
    ^
    Payroll3.java:79: class, interface, or enum expected
    hoursWorked = input.nextFloat(); // read second number again
    ^
    Payroll3.java:80: class, interface, or enum expected
    ^
    Payroll3.java:86: class, interface, or enum expected
    System.out.println(); // outputs a blank line
    ^
    Payroll3.java:87: class, interface, or enum expected
    System.out.print( nameOfEmployee ); // display employee name
    ^
    Payroll3.java:88: class, interface, or enum expected
    System.out.printf( "'s weekly pay is: $%,.2f\n", product); // display
    product
    ^
    Payroll3.java:89: class, interface, or enum expected
    System.out.println(); // outputs a blank line
    ^
    Payroll3.java:91: class, interface, or enum expected
    ^
    Payroll3.java:96: class, interface, or enum expected
    System.out.println(); // outputs a blank line
    ^
    Payroll3.java:98: class, interface, or enum expected
    } // end method main
    ^
    27 errors
    Any other suggestions?

  • Help with Recurrsion program

    I seem to be having a little problem with my program. In my main program, depending on which method comes first, the other methods wont work for example the way my main program is not, with occurance method before removeLetter method, the occurance method works fine, but my removeLetter meth won't remove the letter. But if i switch the two and have removeLetter first then it will remove the letter, but my occurance method will come back say the letter is not in the word even when it is...can someone help me? Thanx in advance...
    class CharacterRecurrance{
         private int i=0;
         private int occur=0;
         void inString(String s, char n){
              if(i<s.length()){
                   if(s.charAt(i)==n)
                        System.out.println("Yes, the letter" + " " + n + " " + "is present");
                   else{
                        i++;
                        inString(s,n);
              else System.out.println("No, the letter" + " " + n + " " + "is not present");
         void occurance(String s, char n){
              if(i < s.length()){
                   if(s.charAt(i)==n){
                        occur++;
                        i++;
                        occurance(s,n);
                   else{
                        i++;
                        occurance(s,n);
              else System.out.println("The letter" + " " + n + " " + "appears" + " " + occur + " " + "times");
         void removeLetter(String s, char n){
              if(i < s.length()){
                   if(s.charAt(i)==n){
                        s = s.replace(s.charAt(i),' ');
                        i++;
                        removeLetter(s,n);
                   else{
                        i++;
                        removeLetter(s,n);
              else System.out.println(s);
    class Program3_10{
         public static void main(String[] a) {
              CharacterRecurrance find = new CharacterRecurrance();
              String word = "mississippi";
              char letter = 's';
              find.inString(word, letter);
              System.out.println();
              find.occurance(word, letter);
              System.out.println();
              find.removeLetter(word, letter);
    }

    Or make it zero in the last step of each function. Like this-void occurance(String s, char n){
              if(i < s.length()){
                   if(s.charAt(i)==n){
                        occur++;
                        i++;
                        occurance(s,n);
                   else{
                        i++;
                        occurance(s,n);
              else{
                   System.out.println("The letter" + " " + n + " " + "appears" + " " + occur + " " + "times");
                   i=0; // reset to zero.
         }

  • Help with pathfinding program

    hi,
    i study java at school and i need help with my project.
    im doing a simple demonstration of a pathfinding program whose algoritm i read off Wikipedia (http://en.wikipedia.org/wiki/Pathfinding)where the co-ordinates of the start and end points
    are entered and the route is calculated as a list of co-ordinates. Here is the section of code i am having trouble with-
    void find_path(int x,int y,int p,int q)
    int t1;int t2;
    int temp_pool[][]=new int[4][3];//stores contagious cells of elements in grid pool
    int grid_pool[][]= new int[100000][3];
    int pass_pool[][]=new int[4][3];//stores the pool of squares which can be added to the list of direction
    int path[][]= new int[10000][3];//stores actual path
    int count=1;int note=10;int kk=0;
    int curx,cury;
    //the above arrays contain 3 columns - to store x and y co-ordinate and a counter variable(the purpose of which will become clear later)
    grid_pool[0][0]=p;
    grid_pool[0][1]=q;
    grid_pool[0][2]=0;
    int counter=grid_pool[0][2];
    for(int i=0;i<=100;i++)
    counter++;
    curx=grid_pool[0];
    cury=grid_pool[i][1];
    temp_pool[0][0]=curx-1;
    temp_pool[0][1]=cury;
    temp_pool[0][2]=counter;
    temp_pool[0][0]=curx;
    temp_pool[0][1]=cury-1;
    temp_pool[0][2]=counter;
    temp_pool[0][0]=curx+1;
    temp_pool[0][1]=cury;
    temp_pool[0][2]=counter;
    temp_pool[0][0]=curx;
    temp_pool[0][1]=cury+1;
    temp_pool[0][2]=counter;
    int pass=0;
    for(int j=0;j<=3;j++)
    int check=0;
    int in=temp_pool[j][0];
    int to=temp_pool[j][1];
    if(activemap[in][to]=='X')
    {check++;}
    if(linear_search(grid_pool,in,to)==false)
    {check++;}
    if(check==2)
    pass_pool[pass][0]=in;
    pass_pool[pass][1]=to;
    pass++;
    }//finding which co-ordinates are not walls and which are not already present
    for(int k=0;k<=pass_pool.length-1;k++)
    grid_pool[count][0]=pass_pool[k][0];
    grid_pool[count][1]=pass_pool[k][1];
    count++;
    if(linear_search(grid_pool,x,y)==true)
    break;
    //in this part we have isolated the squares which run in the approximate direction of the goal
    //in the next part we will isolate the exact co-ordinates in another array called path
    int yalt=linear_searchwindex(grid_pool,p,q);
    t1=grid_pool[yalt][2];
    int g1;int g2;int g3;
    for(int u=yalt;u>=0;u--)
    g3=find_next(grid_pool,p,q);
    g2=g3/10;
    g1=g3%10;
    path[0]=g2;
    path[u][1]=g3;
    path[u][2]=u;
    for(int v=0;v<=yalt;v++)
    System.out.println(path[v][0]+','+path[v][1]);
    ill be grateful if anyone can fix it. im done with the rest though

    death_star12 wrote:
    hi,
    i study java at school and i need help with my project.
    im doing a simple demonstration of a pathfinding program whose algoritm i read off Wikipedia (http://en.wikipedia.org/wiki/Pathfinding)where the co-ordinates of the start and end points
    are entered and the route is calculated as a list of co-ordinates. Here is the section of code i am having trouble with-
    ...The part "i am having trouble with" means absolutely nothing to the people who are answering questions here. It's like going to the doctor with a broken rib and just saying "doc, I don't feel so well". Get my point?
    Also, please take the trouble to properly spell words and use a bit of capitalization. Your question is hard to read as it is, which will most probably cause (some) people not to help you. And lastly, please use code tags when posting code: it makes it so much easier to read (see: [Formatting Messages|http://mediacast.sun.com/users/humanlever/media/forums_text_editor.mp4]).
    Thanks.

  • Help with a Program I am writing!  Please!

    Hello All,
    This is my first post...I hope to find some answers to my program I am writing! A couple things first - I am 17, and have designed a comp. science class for myself to take while a senior in high school, since there was not one offered. My end of the 2nd term project is to write a program that encompasses the information I have learned about for the past two terms. I know the very basics, if that. Please help!
    My program involves the simple dice throwing program, 'Dice Thrower' by Kevin Boone. The full text/program write out can be found at:
    http://www.kevinboone.com/PF_DiceThrower-java.html
    I am hoping to add a part to this program that basically tells the program if the dice show doubles, pop up a little GUI window that says "You are a Winner! You Got Doubles!"
    I was thinking as I finished chapter 7 in my text book, that either an 'if/else' or 'switch' statement might be the right place to start.
    Could someone please write me a start to the program text that I need to add to 'Dice Thrower', or explain what I need to do to get started! Thank you so much, I really appreciate it.
    Erick DeVore - Eroved Kcire

    import java.applet.Applet;
    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.JLabel;
    import javax.swing.JFrame;
    import java.awt.FlowLayout;
    import java.awt.Color;
    public class DiceThrower extends Applet
    Die die1;
    Die die2;
    public void paint (Graphics g)
         die1.draw(g);
         die2.draw(g);
         g.drawString ("Click mouse anywhere", 55, 140);
         g.drawString ("to throw dice again", 65, 160);
    public void init()
         die1 = new Die();
         die2 = new Die();
         die1.setTopLeftPosition(20, 20);
         die2.setTopLeftPosition(150, 20);
         throwBothDice();
         // Erick's Program Insert below
         public class WinnerGui extends JFrame;
      public WinnerGui();
        super ("You Are The Winner with GUI");
        Container c = getContentPane();
        c.setBackground(Color.lightGray);
        c.setLayout(new FlowLayout());
        c.add(new JLabel("You're a Winner! You Got Doubles!"));
            //End Erick's Program insert
         DiceThrowerMouseListener diceThrowerMouseListener =
              new DiceThrowerMouseListener();
         diceThrowerMouseListener.setDiceThrower(this);
         addMouseListener(diceThrowerMouseListener);
    public void throwBothDice();
         die1.throwDie();
         die2.throwDie();
         repaint();
    class Die
    int topLeftX;
    int topLeftY;
    int numberShowing = 6;
    final int spotPositionsX[] = {0, 60,  0, 30, 60,  0,  60};
    final int spotPositionsY[] = {0,  0, 30, 30, 30,  60, 60};
    public void setTopLeftPosition(final int _topLeftX, final int _topLeftY)
         topLeftX = _topLeftX;
         topLeftY = _topLeftY;
    public void throwDie()
         numberShowing = (int)(Math.random() * 6 + 1);
    public void draw(Graphics g)
         switch(numberShowing)
              case 1:
                   drawSpot(g, 3);
                   break;
              case 2:
                   drawSpot(g, 0);
                   drawSpot(g, 6);
                   break;
              case 3:
                   drawSpot(g, 0);
                   drawSpot(g, 3);
                   drawSpot(g, 6);
                   break;
              case 4:
                   drawSpot(g, 0);
                   drawSpot(g, 1);
                   drawSpot(g, 5);
                   drawSpot(g, 6);
                   break;
              case 5:
                   drawSpot(g, 0);
                   drawSpot(g, 1);
                   drawSpot(g, 3);
                   drawSpot(g, 5);
                   drawSpot(g, 6);
                   break;
              case 6:
                   drawSpot(g, 0);
                   drawSpot(g, 1);
                   drawSpot(g, 2);
                   drawSpot(g, 4);
                   drawSpot(g, 5);
                   drawSpot(g, 6);
                   break;
    void drawSpot(Graphics g, final int spotNumber)
         g.fillOval(topLeftX + spotPositionsX[spotNumber],
              topLeftY + spotPositionsY[spotNumber], 20, 20);
    class DiceThrowerMouseListener extends MouseAdapter
    DiceThrower diceThrower;
    public void mouseClicked (MouseEvent e)
         diceThrower.throwBothDice();
    public void setDiceThrower(DiceThrower _diceThrower)
         diceThrower = _diceThrower;
    }That was what I have dwindled it down to, using my knowledge, as well as others' expertise...however I am listening to what you say, and get these messages when I try to compile in the CMD:
    line 63 - illegal start of expression (carrot at p in public)
    line 63 - ; expected (carrot at c in class)
    line 63 - { expected (carrot at ; at end of line)
    line 65 - illegal start of expression (carrot at p in public)
    line 83 - <identifier> expected (carrot as: (this) ) -- I don't even know what that means ^
    line 84 - invalid method declaration; return type required (carrot at a in add)
    line 84 - <identifier> expected (carrot like this: [see below])
    addMouseListener(diceThrowerMouseListener);
    ^
    line 84 - ) expected (carrot is one place over from previous spot [see above]
    line 93 - illegal start of expression (carrot at p in public)
    I know this seems like a lot of errors, but believe it or not, I actually had it up in the high teens and was able to fix some of them myself from going by previous examples, as well as looking things up in my text book. If anyone has any suggestions concerning the syntax errors of the code, please please let me know and I will work my hardest to fix them...thank you all so much for helping.
    Erick

  • Help with Dice program.

    Hi People!
    This is the homework my professor assigned for me.
    Assignment 2: Write a program that rolls two dice 1000 times, counting the number of box cars (two sixes) that occur, in object-oriented way. (In other words, do not make all your code in one main() method. Use classes and objects.) Use a overloaded constructors.
    I have to use two classes for it. One of is the Dice(Below), and the other would be the client
    This is what I have for the dice part so far.
    public class DiceServer {
    public static void main (String[] args)
    final int ROLLS = 1000;
    int Boxcars = 0, num1, num2;
    Die die1 = new Die();
    Die die2 = new Die();
    for (int roll = 1; roll <= ROLLS; roll++)
    num1 = die1.roll();
    num2 = die2.roll();
    if (num1 == 6 && num2== 6)
    Boxcars++;
    System.out.println("Number of rolls: " + ROLLS);
    System.out.println("Number of Box Cars: " + Boxcars);
    I'm getting an error about the symbol not being resolved, and it's pointing at "Die die1 = new Die();". Can someone please help me. Thank you.
    Also, can someone plaese get me started on the Client Class. Thanks

    Hi,
    I've gotten pretty far with this program thanks to all your help but I've got another question.
    My program so far has been able to display the result of rolling 2 six sided dice 1000 times. I've used Boxcars.java as my Client and Die.java as my overloaded constructor. Now I want to display the number of Boxcars(Double six)by rolling a six-sided die and a 20 sided die together.
    My question is would I code that in Boxcars.java or Die.java.
    Thank you!!!
    Boxcars.java
    public class BoxCars {
    public static void main (String[] args)
    final int ROLLS = 1000;
    int Boxcars = 0, num1, num2;
    Die die1 = new Die();
    Die die2 = new Die();
    for (int roll = 1; roll <= ROLLS; roll++)
    num1 = die1.roll();
    num2 = die2.roll();
    if (num1 == 6 && num2== 6)
    Boxcars++;
    System.out.println("Number of rolls: " + ROLLS);
    System.out.println("Number of Box Cars: " + Boxcars);
    Die.java
    public class Die {
    private final int MIN_FACES = 4;
    private int numFaces;
    private int faceValue;
    public Die ()
    numFaces = 6;
    faceValue = 1;
    public Die (int faces)
    if (faces < MIN_FACES)
    numFaces = 6;
    else
    numFaces = faces;
    faceValue = 1;
    public int roll ()
    faceValue = (int) (Math.random() * numFaces) + 1;
    return faceValue;
    public int getFaceValue()
    return faceValue;
    ************************************************************

  • Need help with basic program.....!

    I've to write a program that generates a random number, which the user has to try and guess, after each guess they're told whether it's too high or too low etc., I've gotten this far, however, the user has only 10 guesses.... In my program I've used a while loop and the user gets an infinite number of guesses, I know I'm supposed to use a for loop, but can't seem to get it to work properly. Also, when the user guesses the number, the program then has to print out how many guesses it took, and I have no idea how to get it to do this AT ALL!!! I'd really appreciate some help with this, thanks v. much!!!!

    I've to write a program that generates a random
    number, which the user has to try and guess, after
    each guess they're told whether it's too high or too
    low etc., I've gotten this far, however, the user has
    only 10 guesses.... In my program I've used a while
    loop and the user gets an infinite number of guesses,
    I know I'm supposed to use a for loop, but can't seem
    to get it to work properly. Also, when the user
    guesses the number, the program then has to print out
    how many guesses it took, and I have no idea how to
    get it to do this AT ALL!!! I'd really appreciate some
    help with this, thanks v. much!!!!Hey not every book covers every aspect of Java (if you haven't got a book and don't want to buy 1 i recommend an online tutorial) If u want the user to have an infinate number of guesses, use an infinate while loop. Put this in a file called app.java:
    import java.applet.Applet;
    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
    public class app extends Applet implements ActionListener
         JLabel lbl=new JLabel("Guess a number between 0 and 10:");
         JTextField txtfield=new JTextField(20);
         JButton button=new JButton("Guess...");
         JLabel lbl2=new JLabel();
         int randomnumber=Math.round((float)Math.random()*10);
         public void init()
              add(lbl);
              add(txtfield);
              add(button);
              button.addActionListener(this);
         public void actionPerformed (ActionEvent e)
              String s=new String("");
              s+=randomnumber;
              if (e.getSource().equals(button) && txtfield.getText().equals(s))
                   setBackground(Color.white);
                   setForeground(Color.black);
                   lbl2.setText("Got it!");
                   add(lbl2);
                   validate();
              else
                   setBackground(Color.white);
                   setForeground(Color.black);
                   if (Integer.parseInt(txtfield.getText())>randomnumber)
                   lbl2.setText("Too High!");
                   else
                   lbl2.setText("Too Low!");
                   add(lbl2);
                   validate();
    Then create a HTML document in the classes folder:
    <HTML>
    <HEAD>
    <TITLE>APPLET</TITLE>
    </HEAD>
    <BODY>
    <HR>
    <CENTER>
    <APPLET
         CODE=app.class
         WIDTH=400
         HEIGHT=200 >
    </APPLET>
    </CENTER>
    <HR>
    </BODY>
    </HTML>
    It will do what you wish. If you want to have more then 10 numbers to guess, for example 100, do this:
    int randomnumber=Math.round((float)Math.random()*100);
    Does that answer your question?

  • Help with Tree Program

    I'm having some problems with my program. It's a binary tree of names but they aren't organized in any particular order and names can repeat. I built the tree correctly but the problem comes in writing a method. I have to write method pathLength with parameters (Treenode, Person (object), and level (starts as 1) ) it returns the longest path from the TreeNode to the node containing the Person. My code seems to work for most of the names on the tree except for one or two and I can't see why. Here's my code:
    public int pathLength(TreeNode t, String name, int level)
         if(t==null)
         return 0;
    else if((name.equals(t.getValue())&&(t.getLeft()==null||t.getRight()==null)))
         return level;
         return max(pathLength(t.getLeft(),name,level+1),pathLength(t.getRight(),name,level+1));
    max is a method that returns the larger of two integers (x,y)
    next I have to write method rootPath with parameter (TreeNode) that returns the longest path from the root of the tree to a node containing the same as root.........this method I'm not even close on but I would have thought that all I needed to do for code was
         public int rootPath(TreeNode t)
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    and also another part of my program that i'm having trouble with is a different tree which has letters as leaves and null's as parents etc. To get to a letter u follow a code of 1's and 0's so 1110 would be left left left right and u'd get a letter.....i wrote the code that i'll get a code and i can find the letter but now i hafta make it go opposite so i type a letter and it gives the code
    they provided me with the main code
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    result+=wordToBitsHelper(word.substring(k,k+1),myRoot,"""");
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  • Little Help with my program..

    Ok... I am not completely finished with the program but I need to figure out something before I move on. This program is reading in information from a file. The thing I am having a problem with is how I can get it to add the GPA for each group of people, instead of adding the GPA for everyone in the file!! This program is basically reading in, the "groups living group", the name of each student, and their GPA. If you run my program, you will see a printout of "GPA sum in group" and GPA sum overall, I figured out how to get the sum overall for all the groups, but I cant figure out how to get the sum for each individual group! I hope this makes sense!!! If you need more clarification just ask!!! Thanks in advance! Also, I have compiled the program already and it runs just fine..!
    I will give you the information from the file being read in. Here it is
    Kappa Alpha Tau Sorority
    Hollander 3.347
    LaFarge 1.110
    EndOfGroup
    Taylor 2C Dormitory Section
    Rapoport 2.2956
    Smith 3.87
    Scarl 3.48
    Granville 2.946
    EndOfGroup
    Richards 4B Dormitory Section
    Horstmann 2.769
    Cole 3.47
    Barney 2.23
    EndOfGroup
    Here is my code!!!!
    import java.util.Scanner;
    import java.text.DecimalFormat;
    public class GPA
    public static void main(String[] args)
    final String SENTINEL = "EndOfGroup";
    final double MAX_GPA = 4.0;
    final Double MIN_GPA = 0.0;
    final boolean DEBUG = true;
    String livingG, studentName, stuName, wrongFormat;
    double gpa = 0.0, gpaSum = 0.0, dVal = 0.0, maxGpa = 0.0,
    avgGpa = 0.0, minGpa = 0.0, overMax = 0.0, overMin = 0.0,
    dMin = 0.0, dMax = 0.0;
    int counter = 0, grpNum = 0, totNum = 0;
    DecimalFormat form = new DecimalFormat("0.00%");
    Scanner scan = new Scanner(System.in);
    while(scan.hasNext())
    livingG = scan.nextLine();
    System.out.println("Living Group: " + livingG);
    stuName = scan.next();
    grpNum = 0;
    while(!stuName.equals(SENTINEL))
    if(!scan.hasNextDouble())
    wrongFormat = scan.next();
    System.out.println("ERROR: USER INPUT NOT IN PROPER " +
    "FORMAT " + wrongFormat);
    else
    gpa = scan.nextDouble();
    System.out.println(" Student: " + stuName + " GPA = " +
    gpa);
    if(DEBUG == true)
    grpNum++;
    counter++;
    gpaSum = gpaSum + gpa;
    totNum++;
    System.out.println("DEBUG:" + "\n" + " Number in group = " +
    grpNum + " GPA sum in group = " + gpa + "\n" + " Total " +
    "number = " + totNum + " GPA sum overall = " + gpaSum + "\n" +
    " Minimum GPA in group = " + dMin + " Maximum GPA " +
    "in group = " + MAX_GPA + "\n" + " Overall minimum GPA = " +
    overMin + " Overall maximum GPA = " + overMax);
    System.out.println();
    stuName = scan.next();
    else
    stuName = scan.next();
    System.out.println("Average GPA for this group = " + gpaSum / counter);
    System.out.println("Minimum GPA for this group = " + minGpa);
    System.out.println("Maximum GPA for this group = " + maxGpa);
    System.out.println();
    livingG = scan.nextLine();
    }

    Oh, Ok I see the code tag thing now!!! I will use now. Any other input to my question?
    import java.util.Scanner;
    import java.text.DecimalFormat;
    public class GPA
       public static void main(String[] args)
          final String SENTINEL = "EndOfGroup";
          final double MAX_GPA = 4.0;
          final Double MIN_GPA = 0.0;
          final boolean DEBUG = true;
          String livingG, studentName, stuName, wrongFormat;
          double gpa = 0.0, gpaSum = 0.0, dVal = 0.0, maxGpa = 0.0,
          avgGpa = 0.0, minGpa = 0.0, overMax = 0.0, overMin = 0.0,
          dMin = 0.0, dMax = 0.0;
          int counter = 0, grpNum = 0, totNum = 0;
          DecimalFormat form = new DecimalFormat("0.00%");
          Scanner scan = new Scanner(System.in);
          while(scan.hasNext())
             livingG = scan.nextLine();
             System.out.println("Living Group: " + livingG);
             stuName = scan.next();
              grpNum = 0;
             while(!stuName.equals(SENTINEL))
                if(!scan.hasNextDouble())
                wrongFormat = scan.next();
                System.out.println("ERROR: USER INPUT NOT IN PROPER " +
                "FORMAT " + wrongFormat);
                else
                gpa = scan.nextDouble();
                System.out.println("   Student:  " + stuName + "     GPA = " +
                gpa);
                if(DEBUG == true)
                grpNum++;
                counter++;
                gpaSum = gpaSum + gpa;
                totNum++;
                System.out.println("DEBUG:" + "\n" + "   Number in group = " +
                grpNum + "   GPA sum in group = " + gpa + "\n" + "   Total " +
                "number = " + totNum + "   GPA sum overall = " + gpaSum + "\n" +
                 "   Minimum GPA in group = " + dMin + "   Maximum GPA " +
                "in group = " + MAX_GPA + "\n" + "   Overall minimum GPA = " +
                overMin + "   Overall maximum GPA = " + overMax);
                System.out.println();
                stuName = scan.next();
                else
                stuName = scan.next();
          System.out.println("Average GPA for this group = " + gpaSum /    counter);
          System.out.println("Minimum GPA for this group = " + minGpa);
          System.out.println("Maximum GPA for this group = " + maxGpa);
          System.out.println();
          livingG = scan.nextLine();
    }

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