Adding Help to a GUI
I'm a bit new at making GUI's in java. I need to add a help option in my GUI by having a question mark at the right top corner of the window that once clicked when you hover over certain areas in the GUI it will provide help. does anyone know a good place for me to start looking (it's hard to google for it) or give me some starting code?
Thank you
Do you want one in the title bar? If so forget it. While you can do it, it would be very hard to do. (1)
Having a "help" button somewhere else on the window would be easy.
It could be done by having an action listener changing the mouse cuser on the Window curser, most likely to a custom curser. Then adding mouse listeners to everything that can be "helped". Which consumes the event (so the action listener on buttons is not fired), removes itself from all that it had been added to, and opens the help window for the object picked.
1) To change the title bar requires JNI, or making a Custom L&F, and having that be able to add a "help" button
Similar Messages
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I need some help with the GUI design.
Have you tried the line inputs on the back of your FirePod? If you update its firmware (not sure if you will need to or not), I seem to remember hearing that the FirePod can run without FW connection, i.e. stand alone. In this mode with the outs from your mixer into line ins 1-2 (2nd from left on the back) it should work fine. I say should because I have never tried. However, these are used for returns from an external effects unit. I assume here, and the important word is assume, that there are two so that they can be used as a stereo send or as a mono send. Worth a try! Let us know how it goes.
Best, Fred -
Adding link on SAP Gui logon page
Hi All,
I have the problem that I need to add a link on the SAP Gui logon page.
Within the transaction SE61 I have added the general text ZLOGIN_SCREEN_INFO.
When I click on the Insert Command I have the possibility to create a link but the char. format F4 list is empty and it does not accept the link creation without it being filled.
Does anybody have an idear?
Thank you for your help
SoerenHi Juan,
When I click on the Insert Command I have the possibility to create a link but the char. format F4 list is empty and it does not accept the link creation without it being filled.
Would you please comment on this ?
I have also seen the only possibility... but same issue...
Regards.
Rajesh Narkhede -
Help in understanding GUI's!!!
Hi everyone, I'm new to this type of forum, but I figured it can't hurt to ask for help wherever I can find it. I'm in a Java II class right now, and I'm having a hard time understanding how to build a GUI. I created the programs provided in the book, but I keep getting an error upon compiling, "unreachable statement". I have included my code, I'm not sure how to paste it properly, so I'm sorry if it's hard to read. Please let me know if anyone can help me out here. I'm not sure how much it matters, but the Java Machine we are using is 1.4.2... Thanks for any help!!!
**The first part is this: Rooms.java**
Chapter 5: Reserve a Party Room
Programmer: Sabrina M. Liberski
Date: December 16, 2007
Filename: Rooms.java
Purpose: This is an external class called by the Reservations.java program.
Its constructor method receives the number of nonsmoking and smoking rooms
and then creates an array of empty rooms. The bookRoom() method accepts a
boolean value and returns a room number.
public class Rooms
//declare class variables
int numSmoking;
int numNonSmoking;
boolean occupied[];
public Rooms(int non, int sm)
//construct an array of boolean values equal to the total number of rooms
occupied = new boolean[sm+non];
for(int i=0; i<(sm+non); i++)
occupied[i] = false; //set each occupied room to false or empty
//initialize the number of smoking and nonsmoking rooms
numSmoking = sm;
numNonSmoking = non;
public int bookRoom(boolean smoking)
int begin, end, roomNumber=0;
if(!smoking)
begin = 0;
end = numNonSmoking;
else
begin = numNonSmoking;
end = numSmoking+numNonSmoking;
for(int i=begin; i<end; i++)
if(!occupied) //if room is not occupied
occupied[i] = true;
roomNumber = i+1;
i = end; //to exit loop
return roomNumber;
}**The second part is:** /*
Chapter 5: Reserve a Party Room
Programmer: Sabrina M. Liberski
Date: December 16, 2007
Filename: Reservations.java
Purpose: This program creates a windowed application to reserve a party room.
It calls an external class named Rooms.
import javax.swing.JOptionPane;
import java.awt.*;
import java.awt.event.*;
public class Reservations extends Frame implements ActionListener
Color lightRed = new Color(255, 90, 90);
Color lightGreen = new Color(140, 215, 40);
Rooms room = new Rooms(5,3);
Panel roomPanel = new Panel();
TextArea roomDisplay[] = new TextArea[9];
Panel buttonPanel = new Panel();
Button bookButton = new Button("Book Room");
Panel inputPanel = new Panel();
Label custNameLabel = new Label("Name:");
TextField nameField = new TextField(15);
Label custPhoneLabel = new Label("Phone number:");
TextField phoneField = new TextField(15);
Label numLabel = new Label("Number in party:");
Choice numberOfGuests = new Choice();
CheckboxGroup options = new CheckboxGroup();
Checkbox nonSmoking = new Checkbox("Nonsmoking", false, options);
Checkbox smoking = new Checkbox("Smoking", false, options);
Checkbox hidden = new Checkbox("", true, options);
public Reservations()
//set Layouts for frame and three panels
this.setLayout(new BorderLayout());
roomPanel.setLayout(new GridLayout(2,4,10,10));
buttonPanel.setLayout(new FlowLayout());
inputPanel.setLayout(new FlowLayout());
//add components to room panel
for (int i=1; 1<9; i++)
roomDisplay[i] = new TextArea(null,3,5,3);
if (i<6)
roomDisplay[i].setText("Room " + i + " Nonsmoking");
else
roomDisplay[i].setText("Room " + i + " Smoking");
roomDisplay[i].setEditable(false);
roomDisplay[i].setBackground(lightGreen);
roomPanel.add(roomDisplay[i]);
//add components to button panel
buttonPanel.add(bookButton);
//add components to input panel
inputPanel.add(custNameLabel);
inputPanel.add(nameField);
inputPanel.add(custPhoneLabel);
inputPanel.add(phoneField);
inputPanel.add(numLabel);
inputPanel.add(numberOfGuests);
for(int i = 8; i<=20; i++)
numberOfGuests.add(String.valueOf(i));
inputPanel.add(nonSmoking);
inputPanel.add(smoking);
//add panels to frame
add(buttonPanel, BorderLayout.SOUTH);
add(inputPanel, BorderLayout.CENTER);
add(inputPanel, BorderLayout.NORTH);
bookButton.addActionListener(this);
//overriding the windowClosing() method will allow the user to click the Close button
addWindowListener(
new WindowAdapter()
public void windowClosing(WindowEvent e)
System.exit(0);
}//end of constructor method
public static void main(String[] args)
Reservations f = new Reservations();
f.setBounds(200,200,600,300);
f.setTitle("Reserve a Party Room");
f.setVisible(true);
} //end of main
public void actionPerformed(ActionEvent e)
if (hidden.getState())
JOptionPane.showMessageDialog(null, "You must select Nonsmoking or Smoking.", "Error", JOptionPane.ERROR_MESSAGE);
else
int available = room.bookRoom(smoking.getState());
if (available > 0) //room is available
roomDisplay[available].setBackground(lightRed); //display room as occupied
roomDisplay[available].setText(
roomDisplay[available].getText() +
"\n" +
nameField.getText() +
" " +
phoneField.getText() +
"\nparty of " +
numberOfGuests.getSelectedItem()
); //display info in room
clearFields();
else //room is not available
if (smoking.getState())
JOptionPane.showMessageDialog(null, "Smoking is full.", "Error", JOptionPane.INFORMATION_MESSAGE);
else
JOptionPane.showMessageDialog(null, "Nonsmoking is full.", "Error", JOptionPane.INFORMATION_MESSAGE);
hidden.setState(true);
} //end of else block that checks the available room number
} //end of else block that checks the state of the hidden option button
} //end of actionPerformed method
//reset the text fields and choice component
void clearFields()
nameField.setText("");
phoneField.setText("");
numberOfGuests.select(0);
nameField.requestFocus();
hidden.setState(true);
} //end of clearFields() method
} //end of Reservations classIn order to display a component, that component has to be added to a container that is either that root container or has a parent container that is the root container. You have at least one JPanel, roomPanel, that is added to nothing. You will have to search through this to see if their are others.
But more importantly, you are coding this all wrong. You need to code like so:
1) create your class skeleton, see that it compiles and runs.
2) add enough to make a JFrame appear, nothing more. Make sure it compiles, runs, and you see the frame.
3) add code a little bit at a time, and after each addition, compile and run the code, make sure that you see any visual elements.
4) repeat section 3 until project done.
5) for larger projects, I create separate classes and run each one with its own main method to check it as I create it before adding it to the greater program.
If you don't do it this way, you will end up with a mess where when you correct one error, three more show up.
Also, I recommend that when an error or problem pops up like one did just now (invisible components) that you work on debugging it first for at least 1-2 hours before coming to the forum for answers. Otherwise you don't learn how to debug, an important skill to master.
Edited by: petes1234 on Dec 17, 2007 10:11 AM -
I am configuring a new Intel Xserve with 10.5.2 ready to move data from my current 10.4.11 system
I have added over 100 entries into DNS via the Server Admin GUI by hand.
(I tried using the move the data files and then using the convert utility. It kept missing and corrupting data).
I have added most of my records apart from a few A records and CNAMEs, however when I click on "add entry", there is no "new entry" created. In fact I cannot seem now to add any entries to DNS via GUI.
The GUI is the preferred entry point as other colleagues may need to add to DNS in my absence.
I have stopped DNS, restarted, rebooted the system.
The following is in /var/log/system.log it is complaining about not having a nameserver, but it does.
Any help would be appreciated.
Apr 3 09:48:26 adminservices servermgrd[89]: servermgr_dns: Failed to save zone '(null)' because the zone does not have a nameserver.
Apr 3 09:48:55: --- last message repeated 3 times ---
Apr 3 09:48:55 adminservices Server Admin[271]: Unexpected call to doMarkConfigurationAsDirty by 'DNS' plugin during updateConfigurationViewFromDescription
Apr 3 09:52:30 adminservices Server Admin[271]: Unexpected call to doMarkConfigurationAsDirty by 'DNS' plugin during updateConfigurationViewFromDescription
Apr 3 09:53:00: --- last message repeated 1 time ---
Apr 3 09:53:17 adminservices Server Admin[271]: Unexpected call to doMarkConfigurationAsDirty by 'DNS' plugin during updateConfigurationViewFromDescription
Apr 3 09:55:06 adminservices servermgrd[89]: servermgr_dns: Failed to save zone '(null)' because the zone does not have a nameserver.
Apr 3 09:55:36: --- last message repeated 3 times ---
Apr 3 09:56:24 adminservices Server Admin[271]: Unexpected call to doMarkConfigurationAsDirty by 'DNS' plugin during updateConfigurationViewFromDescription
Apr 3 09:57:08 adminservices servermgrd[89]: servermgr_dns: Failed to save zone '(null)' because the zone does not have a nameserver.
Apr 3 09:57:15: --- last message repeated 3 times ---
Apr 3 09:57:15 adminservices Server Admin[271]: * -[GroupTextField windowDidResignKey:]: unrecognized selector sent to instance 0x1000e130
Apr 3 09:57:22: --- last message repeated 1 time ---
Apr 3 09:57:22 adminservices [0x0-0x12012].com.apple.ServerAdmin[271]: * ERROR: -[GRAxes computeLayout]:1124 - plotRect height = 0.000000 <= 0.0 *
Apr 3 09:57:22 adminservices [0x0-0x12012].com.apple.ServerAdmin[271]: * ERROR: -[GRChartView computeLayout]:1194 - Layout for overlay axes (0x13eebd00) failed. *
Apr 3 09:57:22 adminservices [0x0-0x12012].com.apple.ServerAdmin[271]: * ERROR: -[GRAxes computeLayout]:1124 - plotRect height = 0.000000 <= 0.0 *
Apr 3 09:57:22 adminservices [0x0-0x12012].com.apple.ServerAdmin[271]: * ERROR: -[GRChartView computeLayout]:1194 - Layout for overlay axes (0x13eedef0) failed. *
Apr 3 09:57:23 adminservices [0x0-0x12012].com.apple.ServerAdmin[271]: * ERROR: -[GRAxes computeLayout]:1124 - plotRect height = 0.000000 <= 0.0 *
Apr 3 09:57:23 adminservices [0x0-0x12012].com.apple.ServerAdmin[271]: * ERROR: -[GRChartView computeLayout]:1194 - Layout for overlay axes (0x13eebd00) failed. *
Apr 3 09:57:23 adminservices [0x0-0x12012].com.apple.ServerAdmin[271]: * ERROR: -[GRAxes computeLayout]:1124 - plotRect height = 0.000000 <= 0.0 *
Apr 3 09:57:23 adminservices [0x0-0x12012].com.apple.ServerAdmin[271]: * ERROR: -[GRChartView computeLayout]:1194 - Layout for overlay axes (0x13eedef0) failed. *
Apr 3 10:05:08 adminservices [0x0-0x12012].com.apple.ServerAdmin[271]: * ERROR: -[GRAxes computeLayout]:1124 - plotRect height = 0.000000 <= 0.0 *
Apr 3 10:05:08 adminservices [0x0-0x12012].com.apple.ServerAdmin[271]: * ERROR: -[GRChartView computeLayout]:1194 - Layout for overlay axes (0x13eebd00) failed. *
Apr 3 10:05:08 adminservices [0x0-0x12012].com.apple.ServerAdmin[271]: * ERROR: -[GRAxes computeLayout]:1124 - plotRect height = 0.000000 <= 0.0 *
Apr 3 10:05:08 adminservices [0x0-0x12012].com.apple.ServerAdmin[271]: * ERROR: -[GRChartView computeLayout]:1194 - Layout for overlay axes (0x13eedef0) failed. *
Apr 3 10:05:43 adminservices com.apple.launchd[1] (0x416a30.Locum[22193]): Exited: Terminated
Apr 3 10:32:57 adminservices sshd[22755]: USER_PROCESS: 22755 ttys000
Apr 3 10:32:57 adminservices com.apple.launchd[1] (0x416cc0.sshd[22755]): Could not setup Mach task special port 9: (os/kern) no accessFunny thing, we just upgraded our xserve from 10.3.9 to 10.4.11 and our DNS is having problems as well. Never has a problem before. Whines and complains that it doesn't know who "xserve" is and does not associate "xserve" with its local IP address.
Maybe what will help you may help us.
Ever since the upgrade, Windows file-sharing has gotten horribly gummy. -
I am working on programing a program for my department, Meteorology, at school so that I can download images every five minutes. I have a version of this that works in the command line, but I want to add a gui to it now. I am not really sure how to start. I know that I need a drop down box with all of the radar sites and their call numbers, and a radio button so they can select the type of image that the user wants to download. These two parts then make up the URL of the image so I can download it. I tried makeing a gui by making each one of these components a separate class. Basically, I am wondering if I should start off by making the GUI all one class, or if each peice of it should be its own class that then gets tied together in a different part of the program. any help with GUI would be great as I am new to this step of programing having only worked in Java command line and Fortran 77. Thanks
NeilHi,
You can create a GUI from within one class. GUIs can be created for applications or applets. The following code is a simple GUI for an application using Swing components. You may need JDK 1.3.1_6.
To make your GUI functional you would need to add or implement Event Handlers preferably using the delegation model. Each control(buttons, textfield, etc) you need to define the event object(button clicks), the event source(button), and an event handler(understands the event and executes code that processes the event).
import javax.swing.*;
public class Customer
//Variable for frame window
static JFrame frameObj;
static JPanel panelObj;
//Variables of labels
JLabel labelCustName;
JLabel labelCustCellNo;
JLabel labelCustPackage;
JLabel labelCustAge;
//Variables for data entry controls
JTextField textCustName;
JTextField textCustCellNo;
JComboBox comboCustPackage;
JTextField textCustAge;
public static void main(String args[])
//Creating the JFrame object
frameObj = new JFrame("Customer Details Form");
//Setting the close option
frameObj.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Making the frame visible
frameObj.setVisible(true);
frameObj.setSize(300,300);
Customer customerObj = new Customer();
public Customer()
//Add appropriate controls to the frame in the constructor
//Create panel
panelObj = new JPanel();
frameObj.getContentPane().add(panelObj);
//Setting close option
frameObj.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and add the appropriate controls
//Initializing labels
labelCustName = new JLabel("Customer Name: ");
labelCustCellNo = new JLabel("Cell Number: ");
labelCustPackage = new JLabel("Package: ");
labelCustAge = new JLabel("Age: ");
//Initializing data entry controls
textCustName = new JTextField(30);
textCustCellNo = new JTextField(15);
textCustAge = new JTextField(2);
String packages[] = {"Executive", "Standard"};
comboCustPackage = new JComboBox(packages);
//Adding controls for customer name
panelObj.add(labelCustName);
panelObj.add(textCustName);
//Adding controls for cell number
panelObj.add(labelCustCellNo);
panelObj.add(textCustCellNo);
//Adding controls for Package
panelObj.add(labelCustPackage);
panelObj.add(comboCustPackage);
//Adding controls for customer age
panelObj.add(labelCustAge);
panelObj.add(textCustAge); -
Plz help with me gui problem(arraylist)
my program
stocksymbol ------------------ stockname ------------------ enter
(label) (textfield) (label) (textfield) (button)
create a gui application using jframe and jpanel so that user can enter stock details(symbol,name) when user press "enter(button)" the text entered in the textfield should be add to an arraylist.
when we close the window ,we have to print the items present in the arraylist....
i have created all the components but iam getting difficult in display the arraylist when i close the window
i have created these classes
public class Stock {?}
public class StockEntryFrame extends JFrame {
// code to allow the frame to handle a window closing event ? when the window is closed,
// the stock list should be printed. ?
public class StockEntryPanel extends JPanel {
public StockEntryPanel(ArrayList<Stock> stockList) {
can u plz help me how to diplay the contents in arraylistMY PROGRAM IS LIKE THIS:::::::::
STOCKNAME-----------
STOCKSYMBOL---------
STOCK PRICE--------
ENTER(BUTTON)
WHEN USER ENTERS HIS INPUT IN THE TEXT BOX AND PRESS ENTER, THEN THE TEXT PRESENT IN THE TEXTBOX SHOULD BE ENTERED INTO AN ARRAYLIST.
THIS IS A GUI PROGRAM......
WHEN WE CLOSE THE FRAME ,WE HAVE TO DISPLAY THE CONTENTS PRESENT IN THE ARRAYLIST
I HAVE CREATED THE PROGRAM LIKE THIS
CLASS STOCKENTRYPANEL EXTENDS JPANEL
//ADDING ALL THE COMPONETNS TO THE PANEL
CLASS STOCKENTRY FRAME EXTENDS JFRAME
//ADDING PANEL TO THE FRAME
//I NEED THE CODE HERE
WHEN WE CLOSE THE WINDOW THE ARRAYLIST DETAILS SHOULD BE PRINTED
} -
Help with dynamic GUI in NetBeans
Hey all,
I'm new here and was looking for help. I'm trying to create a GUI which is dynamic. I want a JPanel (I think this is the proper component) that will be dynamically populated with other modules, namely other JPanels defined as classes. This JPanel is within a JDialog. Ive been trying things like this:
myPanel.add(new myNewPanel)inside of a the index changed method but the panel is not being added. I feel like I'm doing something fundamentally wrong. Does anyone have any words of advice??
ThanksOf course JDialog has a pack() method.
If you need further help then you need to create a [Short, Self Contained, Compilable and Executable, Example Program (SSCCE)|http://homepage1.nifty.com/algafield/sscce.html], that demonstrates the incorrect behaviour.
Don't forget to use the [Code Formatting Tags|http://forum.java.sun.com/help.jspa?sec=formatting], so the posted code retains its original formatting. -
I have a main GUI file which is like the test file and I have an AddwardenDialog file i need to get the value entered in theWardenRank from AddWardenDialog to use in my main GUI file to determine a condition relating to something else.
So just want to know how I can copy this value from AddwardenDialog to main testing GUI file
add (new JLabel("Enter Warden Rank: "));
theWardenRank = new JTextField(20) ;
add (theWardenRank);Thankyounoone got any idea's of how to do this then? HELP lol
I've got another problem as well adding a search method in GUI
non GUI version
Prison.java
public void SearchPrisonersFOR(JTextArea displayArea) { for(Person nextPrisoner : thePersons)
if (nextPrisoner instanceof Prisoner)
Prisoner p = (Prisoner) nextPrisoner;
if (p.getPrisonerID().equals(id))
displayArea.append("\n" + p);
TestPrison.java
//Search for Prisoner by ID
case 6:
System.out.println("Enter ID to search");
id = kybd.next();
HMEssex.SearchPrisoners(id);
break;
}GUI
SearchPrisonersDialog.java
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class SearchPrisonersDialog extends JDialog implements ActionListener
private JButton ok;
private JButton cancel ;
private JTextField id;
public SearchPrisonersDialog(String sTitle, JFrame owner)
super (owner, sTitle, true);
setLayout(new FlowLayout());
setSize(400,250);
add (new JLabel("Enter Prisoner ID to search for: "));
id = new JTextField(10) ;
add (id);
ok = new JButton("Search");
ok.addActionListener(this);
add(ok);
cancel = new JButton("Cancel");
cancel.addActionListener(this);
add(cancel);
//public Prisoner getPrisoner()
//return thePrisoner ;
public void actionPerformed(ActionEvent e)
if (e.getSource() == ok)
return id;
//SearchPrisonersFOR(id);
else if (e.getSource() == cancel)
// data entry cancelled
id = null;
dispose();
}how do I add a method into Main GUI TestPrisonGUI.java, so that my search method will work
2 problems to solve now
Thankyou -
Issue while adding Help Link using personalization
Hi... i am adding a help links on all the iRec pages using personalization.
Requirment:-
Need to have a help link on all the pages of iRec at the left corner of the page
So i made the following changes to do this...
1. Created a new Region(This regios is shared by all the pages of iRec)
StackLayout (AM set to deflaut value)
|_
RowLayout (Horz Align set to end)
2. Now i go to the page, click on personalize link at top, and create a new Stack Layout Region below the PageLayoutRN for the Page
and set the extend property of this StackLayout to my above create region.
3. Create a new item under RowLayout, Item Type "Link" and set the destination URI for this link to say "http://google.com"
I do the same steps above on all the pages of iRec and point the destination URI for the link to the one i want to set and all this is done at Site level.
But the issue i am getting is that i am not able to see these personalizations for all the users and at some places the links i created are not clickable. They simply display on the page but cannot be clicked.
Is there something i am doing wrong? so is there any step i did wrongly? Please let me know the solution.
Thanks
SandeepIt should not be show this behavior. one test you can do in this reference create Two more item at site level say MessageStyleText and one more link and check this behavior to all the user.
-
It's the ever popular Inventory program again! I'm creating a GUI to display the information contained within an array of objects which, in this case, represent compact discs. I've received some good help from other's posts on this project since it seems there's a few of us working on the same one but now, since each person working on this project has programmed theirs differently, I'm stuck. I'm not sure how to proceed with my ActionListeners for the buttons I've created.
Here's my code:
// GUICDInventory.java
// uses CD class
import java.awt.*;
import javax.swing.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
public class GUICDInventory extends JFrame
protected JPanel panel; //panel to hold buttons
protected JPanel cdImage; // panel to hold image
int displayElement = 0;
public String display(int element)
return CD2[element].toString();
}//end method
public static void main( String args[] )
new GUICDInventory();
}// end main
public GUICDInventory()
CD completeCDInventory[] = new CD2[ 5 ]; // creates a new 5 element array
// populates array with objects that implement CD
completeCDInventory[ 0 ] = new CD2( "Sixpence None the Richer" , "D121401" , 12 , 11.99, 1990 );
completeCDInventory[ 1 ] = new CD2( "Clear" , "D126413" , 10 , 10.99, 1998 );
completeCDInventory[ 2 ] = new CD2( "NewsBoys: Love Liberty Disco" , "2438-51720-2" , 10 , 12.99, 1999 );
completeCDInventory[ 3 ] = new CD2( "Skillet: Hey You, I Love Your Soul" , "D122966" , 9 , 9.99, 1998 );
completeCDInventory[ 4 ] = new CD2( "Michael Sweet: Real" , "020831-1376-204" , 15 , 12.99, 1995 );
//declares totalInventoryValue variable
double totalInventoryValue = CD.calculateTotalInventory( completeCDInventory );
final JTextArea textArea = new JTextArea(display(displayElement));
final JButton prevBtn = new JButton("Previous");
final JButton nextBtn = new JButton("Next");
final JButton lastBtn = new JButton("Last");
final JButton firstBtn = new JButton("First");
prevBtn.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent ae)
displayElement = (//what goe here? ) % //what goes here?
textArea.setText(display(displayElement));// <--is this right?
nextBtn.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent ae)
displayElement = (//what goes here? ) % //what goes here?
textArea.setText(display(displayElement));// <--is this right?
firstBtn.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent ae)
displayElement = 0;
textArea.setText(display(displayElement));// <--is this right?
lastBtn.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent ae)
displayElement = //what goes here?;
textArea.setText(display(displayElement));// <--is this right?
JPanel panel = new JPanel(new GridLayout(1,2));
panel.add(firstBtn); panel.add(nextBtn); panel.add(prevBtn); panel.add(lastBtn);
JPanel cdImage = new JPanel(new BorderLayout());
cdImage.setPreferredSize(new Dimension(600,400));
JFrame cdFrame = new JFrame();
cdFrame.getContentPane().add(new JScrollPane(textArea),BorderLayout.CENTER);
cdFrame.getContentPane().add(panel,BorderLayout.SOUTH);
cdFrame.getContentPane().add(new JLabel("",new ImageIcon("cd.gif"),JLabel.CENTER),BorderLayout.NORTH);
cdFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
cdFrame.pack();
cdFrame.setSize(500,200);
cdFrame.setTitle("Compact Disc Inventory");
cdFrame.setLocationRelativeTo(null);
cdFrame.setVisible(true);
}//end GUICDInventory constructor
} // end class GUICDInventory
// CD2.java
// subclass of CD
public class CD2 extends CD
protected int copyrightDate; // CDs copyright date variable declaration
private double price2;
// constructor
public CD2( String title, String prodNumber, double numStock, double price, int copyrightDate )
// explicit call to superclass CD constructor
super( title, prodNumber, numStock, price );
this.copyrightDate = copyrightDate;
}// end constructor
public double getInventoryValue() // modified subclass method to add restocking fee
price2 = price + price * 0.05;
return numStock * price2;
} //end getInventoryValue
// Returns a formated String contains the information about any particular item of inventory
public String displayInventory() // modified subclass display method
return String.format("\n%-22s%s\n%-22s%d\n%-22s%s\n%-22s%.2f\n%-22s%s%.2f\n%-22s%s%.2f\n%-22s%s%.2f\n \n" ,
"CD Title:", title, "Copyright Date:", copyrightDate, "Product Number:", prodNumber , "Number in Stock:",
numStock , "CD Price:" , "$" , price , "Restocking fee (5%):", "$", price*0.05, "Inventory Value:" , "$" ,
getInventoryValue() );
} // end method
}//end class CD2
// CD.java
// Represents a compact disc object
import java.util.Arrays;
class CD implements Comparable
protected String title; // CD title (name of product)
protected String prodNumber; // CD product number
protected double numStock; // CD stock number
protected double price; // price of CD
protected double inventoryValue; //number of units in stock times price of each unit
// constructor initializes CD information
public CD( String title, String prodNumber, double numStock, double price )
this.title = title; // Artist: album name
this.prodNumber = prodNumber; //product number
this.numStock = numStock; // number of CDs in stock
this.price = price; //price per CD
} // end constructor
public double getInventoryValue()
return numStock * price;
} //end getInventoryValue
//Returns a formated String contains the information about any particular item of inventory
public String displayInventory()
//return the formated String containing the complete information about CD
return String.format("\n%-22s%s\n%-22s%s\n%-22s%.2f\n%-22s%s%.2f\n%-22s%s%.2f\n%-22s%s%.2f\n \n" ,
"CD Title:", title, "Product Number:", prodNumber , "Number in Stock:",
numStock , "CD Price:" , "$" , price , "Restocking fee (5%):", "$", price*0.05, "Inventory Value:" , "$" ,
getInventoryValue() );
} // end method
//method to calculate the total inventory of the array of objects
public static double calculateTotalInventory( CD completeCDInventory[] )
double totalInventoryValue = 0;
for ( int count = 0; count < completeCDInventory.length; count++ )
totalInventoryValue += completeCDInventory[count].getInventoryValue();
} // end for
return totalInventoryValue;
} // end calculateTotalInventory
// Method to return the String containing the Information about Inventory's Item
//as appear in array (non-sorted)
public static String displayTotalInventory( CD completeCDInventory[] )
//string which is to be returned from the method containing the complete inventory's information
String retInfo = "\nInventory of CDs (unsorted):\n";
//loop to go through complete array
for ( int count = 0; count < completeCDInventory.length; count++ )
retInfo = retInfo + "Item# " + (count + 1); //add the item number in String
retInfo = retInfo + completeCDInventory[count].displayInventory(); //add the inventory detail in String
}// end for
return retInfo; //return the String containing complete detail of Inventory
}// end displayTotalInventory
public int compareTo( Object obj ) //overlaod compareTo method
CD tmp = ( CD )obj;
if( this.title.compareTo( tmp.title ) < 0 )
return -1; //instance lt received
else if( this.title.compareTo( tmp.title ) > 0 )
return 1; //instance gt received
return 0; //instance == received
}// end compareTo method
//Method to return the String containing the Information about Inventory's Item
// in sorted order (sorted by title)
public static String sortedCDInventory( CD completeCDInventory[] )
//string which is to be returned from the method containing the complete inventory's information
String retInfo = "\nInventory of CDs (sorted by title):\n";
Arrays.sort( completeCDInventory ); // sort array
//loop to go through complete array
for( int count = 0; count < completeCDInventory.length; count++ )
retInfo = retInfo + "Item# " + (count + 1); //add the item number in String
retInfo = retInfo + completeCDInventory[count].displayInventory(); //add the inventory detail in String
return retInfo; //return the String containing complete detail of Inventory
} // end method sortedCDInventory
} // end class CDnextBtn.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent ae)
displayElement = (//what goes here? ) % //what goes here?
textArea.setText(display(displayElement));// <--is this right?
});Above is your code for the "Next" button.
You ask the question "What goes here"? Well what do you think goes there?
If you are looking at item 1 and you press the "Next" button do you not want to look at item 2?
So the obvious solution would be to add 1 to the previous item value. Does that not make sense? What problem do you have when you try that code?????
Next you say "Is this right"? Well how are we supposed to know? You wrote the code. We don't know what the code is supposed to do. Again you try it. If it doesn't work then describe the problem you are having. I for one can't execute your code because I don't use JDK5. So looking at the code it looks reasonable, but I can't tell by looking at it what is wrong. Only you can add debug statements in the code to see whats happening.
If you want help learn to as a proper question and doen't expect us to spoon feed the code to you. This is your assignment, not ours. We are under no obligation to debug and write the code for you. The sooner you learn that, the more help you will receive. -
I need help with my GUI Photo Album.
Hello! I'm still learning bits about GUI and I need some assistance to make my basic program work. I've searched the forums to look at past Photo Album projects; they didn't help much or maybe I'm overlooking some things. Every time I click the "Next" button the image doesn't change. It may be a simple task to solve, but I'm really stumped! Sorry if it's such a stupid thing to ask. Thanks in advance.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
public class PhotoAlbum extends JPanel {
int i = 1;
JFrame frame = new JFrame("Photo Album");
JButton next = new JButton("Next");
ImageIcon icon = new ImageIcon("../Images/" + i + ".jpg");
JLabel picture = new JLabel(icon);
ButtonListener buttonListener = new ButtonListener();
public PhotoAlbum() {
frame.setSize(700, 600);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(new BorderLayout(5,5));
frame.getContentPane().add(picture, BorderLayout.CENTER);
frame.getContentPane().add(next, BorderLayout.SOUTH);
next.addActionListener(buttonListener);
frame.setVisible(true);
class ButtonListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
if(e.getSource() == next){
++i;
}WafflesNSyrup wrote:
int i = 1;
ImageIcon icon = new ImageIcon("../Images/" + i + ".jpg");
++i;
So I understand that you originally thought incrementing (i) would somehow update (icon) since it uses (i) in an expression. But now you hopefully know this is not a magical expression language.
I bet you would have also thought that this:
int x = 1;
int y = 2;
int z = x + y;
x = 42;
y = 58;would have ended up with z having the value 100? It doesn't. It did the math once, when it executed the expression (x + y) and stored it in the variable (z). So z == 3, regardless of what happens to x or y after the fact. -
Help with SAP GUI on Trial VMWare Edition
I currently have a trial version of NetWeaver installed (SAP NetWeaver 7.0.1 Java + ABAP Trial VMWare Edition), but having problems getting the GUI to work. The VM is using GNOME 2.12.2.
I'm currently having trouble with SAP GUI. According to SAP help, a requirement to run SAP GUI for HTML is Windows NT 4.0. Since I'm using GNOME, I tried to get the Java version to work.
When I try to launch SAP GUI, it gives me the following error:
http://i.imgur.com/0ZBVI.png
I wasn't able to troubleshoot the error, so I'm in the process of uninstalling this version of SAP GUI, and try installing again. However, I'm having trouble performing the uninstall. I did some reading, and it says to either run the SAPsweep.exe utility or NWSapSetup.exe. But I can't find either of them on my machine (tried doing a system search, no luck).
I found this thread to be helpful: Re: sapsweep.exe for SAPGUI 7.10 ?, but I'm not running on Windows.
Thanks in advance for any inputHello Anoop.
The error occurs because you have selected OLE DB for OLAP Provider in the Business Explorer selection.
You can tell this from the following line in your sapsetup
00:43:58 NwSapsAtlC 1W Marking package SAPGUI_7.30 ({57F4A687-AE41-4BEA-9553-F852C36F8C1E}) as disabled: selected node OLE DB for OLAP Provider ({5390360A-98D9-4377-BD41-9A147392D000}) has failing condition.
Since you don't have Office installed,you cannot use the Business Explorer modules.
Run the installation again only selecting the components you require.
Jude -
Please help with the GUI quiz question!
Hi Folks,
Please help me with the code for the following GUI.
The display window of the application should have two panels at the top level (you could have multiple panels contained within a top-level panel). The first top level panel should have a grid or a border layout and should include apart from various label objects: 1) a textfield to store the info entered, 2) a combobox 3) a combobox or a list box , 4) a radio-button group , 5) a combo box 6) checkboxes for additional accessories, and 7) checkboxes .
The second top-level panel that is placed at the bottom of the window should have a submit button, a clear button and a textarea for output.
Thanks a lot.Please be a little more explicit about what you're doing, what you expect to happen, and what you actually observe.
Please post a short, concise, executable example of what you're trying to do. This does not have to be the actual code you are using. Write a small example that demonstrates your intent, and only that. Wrap the code in a class and give it a main method that runs it - if we can just copy and paste the code into a text file, compile it and run it without any changes, then we can be sure that we haven't made incorrect assumptions about how you are using it.
Post your code between [code] and [/code] tags. Cut and paste the code, rather than re-typing it (re-typing often introduces subtle errors that make your problem difficult to troubleshoot). Please preview your post when posting code.
Please assume that we only have the core API. We have no idea what SomeCustomClass is, and neither does our collective compiler.
If you have an error message, post the exact, complete error along with a full stack trace, if possible. Make sure you're not swallowing any Exceptions.
Help us help you solve your problem. -
Need some help
I want to pop up a gui made in JOptionPane when I close the editor gui. Basically I want to ask the user to confirm the closing because the file has not been saved.
I wrote the code but it is not working (you can find the code in question in the InnerDestroyer class)
What am I missing??
import javax.swing.JScrollPane;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JOptionPane;
import javax.swing.JLabel;
import java.awt.Container;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.awt.event.WindowAdapter;
import java.io.File;
import java.io.FileWriter;
import java.io.FileReader;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.FileNotFoundException;
import java.util.logging.*;
* MyEditor class
public class MyEditor extends JFrame implements ActionListener
public static final int WIDTH=600;
public static final int HEIGHT = 620;
public static final int LINES = 30;
public static final int CHAR_PER_LINE = 53;
private JTextArea theText;
* Constructror, creating the Text Editor GUI
public MyEditor()
setSize(WIDTH,HEIGHT);
setTitle("My Editor");
Container contentPane = getContentPane();
contentPane.setLayout(new BorderLayout());
JPanel buttonPanel = new JPanel();
buttonPanel.setBackground(Color.white);
buttonPanel.setLayout(new FlowLayout());
JButton loadUrl = new JButton("Load URL");
loadUrl.addActionListener(this);
buttonPanel.add(loadUrl);
JButton loadButton = new JButton("Load");
loadButton.addActionListener(this);
buttonPanel.add(loadButton);
JButton saveButton = new JButton("Save");
saveButton.addActionListener(this);
buttonPanel.add(saveButton);
contentPane.add(buttonPanel, BorderLayout.SOUTH);
JPanel textPanel = new JPanel();
textPanel.setBackground(Color.black);
theText = new JTextArea(LINES, CHAR_PER_LINE);
theText.setBackground(Color.white);
textPanel.add(theText);
contentPane.add(textPanel, BorderLayout.NORTH);
JTextField textField = new JTextField(20);
contentPane.add(textField, BorderLayout.CENTER);
JScrollPane scrolledText = new JScrollPane(theText);
textPanel.add(scrolledText);
contentPane.add(textPanel, BorderLayout.NORTH);
JMenu menu = new JMenu("File");
JMenuItem m;
m= new JMenuItem("Clear Text");
m.addActionListener(this);
menu.add(m);
m= new JMenuItem("Exit Editor");
m.addActionListener(this);
menu.add(m);
JMenuBar mBar = new JMenuBar();
mBar.add(menu);
setJMenuBar(mBar);
public void actionPerformed(ActionEvent e)
String actionCommand = e.getActionCommand();
if (actionCommand.equals("Load"))
try
JFileChooser chooser = new JFileChooser();
int returnVal = chooser.showOpenDialog(this);
if(returnVal == JFileChooser.APPROVE_OPTION)
FileReader freader = new FileReader(chooser.getSelectedFile());
BufferedReader breader = new BufferedReader (freader);
theText.setText("");
String line;
while ((line= breader.readLine()) !=null)
theText.append(line + "\n");
breader.close();
catch(FileNotFoundException g)
String error1= "Error opening the file ";
String error2 = "or the file was not found";
theText.setText(error1 +" " + error2);
catch(IOException g)
theText.setText("Error rerading from file");
if (actionCommand.equals("Load URL"))
try
JFileChooser chooser = new JFileChooser();
int returnVal = chooser.showOpenDialog(this);
if(returnVal == JFileChooser.APPROVE_OPTION)
FileReader freader = new FileReader(chooser.getSelectedFile());
BufferedReader breader = new BufferedReader (freader);
theText.setText("");
String line;
while ((line= breader.readLine()) !=null)
theText.append(line + "\n");
breader.close();
catch(FileNotFoundException g)
String error1= "Error opening the file ";
String error2 = "or the file was not found";
theText.setText(error1 +" " + error2);
catch(IOException g)
theText.setText("Error rerading from file");
else if (actionCommand.equals("Save"))
try
JFileChooser chooser = new JFileChooser();
ExampleFileFilter filter = new ExampleFileFilter();
filter.addExtension("txt");
filter.addExtension("html");
filter.setDescription("txt & html files");
chooser.setFileFilter(filter);
int returnVal = chooser.showSaveDialog(this);
if(returnVal == JFileChooser.APPROVE_OPTION)
FileWriter fwriter = new FileWriter(chooser.getSelectedFile());
BufferedWriter bwriter = new BufferedWriter (fwriter);
bwriter.write(theText.getText());
bwriter.close();
catch(IOException io)
theText.setText("Error saving!");
else if(actionCommand.equals("Exit Editor"))
System.exit(1);
else if(actionCommand.equals("Clear Text"))
theText.setText("");
else
theText.setText("Error in editor interface");
public class InnerDestroyer extends WindowAdapter
public void windowClosing(WindowEvent e)
JOptionPane op =new JOptionPane();
JLabel jl = new JLabel("Document has not been saved");
op.showMessageDialog( null, jl, "Warning!", JOptionPane.QUESTION_MESSAGE);
op.setVisible(true);
*//*Main class, making the editor Gui visible**/
public static void main(String[] args)
MyEditor guiEditor = new MyEditor();
guiEditor.setVisible(true);
}import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class Test extends JFrame {
JCheckBox jcb = new JCheckBox("Check Me, Check Me!!!!");
public Test() {
Container content = getContentPane();
content.setLayout(new FlowLayout());
content.add(jcb);
this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent we) {
if (jcb.isSelected()) System.exit(0);
else if (JOptionPane.showConfirmDialog(null,
"You forgot to check the box!\nAre you sure you want to exit",
"DUMB",JOptionPane.OK_CANCEL_OPTION, JOptionPane.WARNING_MESSAGE)==
JOptionPane.OK_OPTION) System.exit(0);
setSize(200, 200);
setVisible(true);
public static void main(String[] args){
new Test();
}If you have a question about this, look at it again. If you still have a question, search the forums.
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