Class, interface, or enum expected error

Question

import java.awt.Graphics;
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 InventoryFinal
//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("CD", 10, 18, 12.00, "Jewel Case");
nwProduct[1] = new ProductAdd("Blue Ray", 9, 20, 25.00, "HD");
nwProduct[2] = new ProductAdd("Game", 8, 30, 40.00, "Game Case");
nwProduct[3] = new ProductAdd("iPod", 7, 40, 50.00, "Box");
nwProduct[4] = new ProductAdd("DVD", 6, 15, 15.00, "DVD Case");
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"); // Add button
final JButton DeleteBtn = new JButton("Delete"); // Delete button
final JButton ModifyBtn = new JButton("Modify"); // Modify button
final JButton SaveBtn = new JButton("Save"); // Save button
final JButton SearchBtn = new JButton("Search"); // Search 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 MyJPanel(); // 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);
buttonJPanel.add(AddBtn);
buttonJPanel.add(DeleteBtn);
buttonJPanel.add(ModifyBtn);
buttonJPanel.add(SaveBtn);
buttonJPanel.add(SearchBtn);
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("CD & DVD Inventory"); // set JFrame title
invFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // termination command
//invFrame.pack();
invFrame.setSize(600, 600); // set size of JPanel
invFrame.setLocationRelativeTo(null); // set screen 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)
textArea.setText(nwProduct[4]+"\n");
} // end prevBtn actionEvent
}); // end prevBtn actionListener
textArea.setText(nwProduct[4]+"n");
nextBtn.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent ae)
textArea.setText(nwProduct[2]+"\n");
} // end nextBtn actionEvent
}); // end nextBtn actionListener
textArea.setText(nwProduct[4]+"n");
lastBtn.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent ae)
textArea.setText(nwProduct[3]+"\n");
} // end lastBtn actionEvent
}); // end lastBtn actionListener
textArea.setText(nwProduct[4]+"n");// assign actionListener and actionEvent for each button
AddBtn.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent ae)
textArea.setText(nwProduct[0]+"\n");
} // end AddBtn actionEvent
}); // end AddBtn actionListener
textArea.setText(nwProduct[4]+"n");
// assign actionListener and actionEvent for each button
DeleteBtn.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent ae)
textArea.setText(nwProduct[0]+"\n");
} // end DeleteBtn actionEvent
}); // end DeleteBtn actionListener
textArea.setText(nwProduct[4]+"n");
// assign actionListener and actionEvent for each button
ModifyBtn.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent ae)
textArea.setText(nwProduct[0]+"\n");
} // end ModifyBtn actionEvent
}); // end ModifyBtn actionListener
textArea.setText(nwProduct[4]+"n");
// assign actionListener and actionEvent for each button
SaveBtn.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent ae)
textArea.setText(nwProduct[0]+"\n");
} // end SaveBtn actionEvent
}); // end SaveBtn actionListener
textArea.setText(nwProduct[4]+"n");
// assign actionListener and actionEvent for each button
SearchBtn.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent ae)
textArea.setText(nwProduct[0]+"\n");
} // end SearchBtn actionEvent
}); // end SearchBtn 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 Inventory4
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 * 0.10;
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",
getProdName(), getItmNumber(), getUnits(), getPrice(), getFeature(), calcValue(), calcValueRstk());
} // end class ProductAdd
class MyJPanel extends JPanel
//private static Random generator = new Random();
private ImageIcon picture; //image to be displayed
// load image
public MyJPanel()
picture = new ImageIcon("mypicture.png"); // set icon
} // end MyJPanel constructor
// display imageIcon on panel
public void paintComponent( Graphics g )
super.paintComponent( g );
picture.paintIcon( this, g, 0, 0 ); // display icon
} // end method paintComponent
// return image dimensions
//public Dimension getPreferredSize()
// return new Dimension ( picture.getIconWidth(),
//picture.getIconHeight() );
} // end method getPreferredSize
} // end class MyJPanel
import java.io.File;
import java.io.IOException;
public class FileAccessDemo
public static void main( String[] args ) throws IOException
// declare variables
String formatStr = "%s exists in %s? %b\n\n";
// processing and output
File file1 = new File( "studentScores.txt" ); // create a File object
System.out.printf
(formatStr, file1.getName(), file1.getAbsolutePath(), file1.exists());
// processing and output
File folder1 = new File( "c:/personnel/" ); // create a File object
folder1.mkdir(); // make a directory
File file2 = new File( "/personnel/faculty.txt" );
file2.createNewFile(); // create a new file
System.out.printf
( formatStr, file2.getName(), file2.getAbsolutePath(), file2.exists() );
// processing and output
file2.delete(); // delete a file, but not the directory
System.out.printf
( formatStr, file2.getName(), file2.getAbsolutePath(), file2.exists() );
} // end main
} // end class
I need help in resolving this error.
Thanks

Answer 1

That code isn't where your error is. Here's the errors I get compiling your code:
H:\java>javac InventoryFinal.java
InventoryFinal.java:78: ')' expected
textArea.append("/nTotal value of Inventory "new java.text.DecimalFormat("$0.00").format(total)"\n\n
                                             ^
InventoryFinal.java:78: ';' expected
textArea.append("/nTotal value of Inventory "new java.text.DecimalFormat("$0.00").format(total)"\n\n
                                                                                               ^
InventoryFinal.java:340: class, interface, or enum expected
import java.io.File;
^
InventoryFinal.java:341: class, interface, or enum expected
import java.io.IOException;
^
4 errorsThe last two errors are on your import statements, which can't be in the middle of a source file. The first two are on this line:
textArea.append("/nTotal value of Inventory "new java.text.DecimalFormat("$0.00").format(total)"\n\n");Which certainly isn't a legal line of Java code. If you want to connect multiple Strings you need to use the "+" operator.