Thread: How to close all tabs in JTabbedPane?

Hi, I'm making a small chat program. I'm having problem with JTabbedPane, I want to remove all tabs in the JTabbedPane when the chat window closed(setvisible=false).
Then if the user click another user name it'll launch again the chat window(setvisible=true).

I'm having problem with the code so I use the setvisible method instead of making new chat window JFrame.

The problem is when I can't remove all the tabs.

this.removeAll()

I got this error

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: -1
	at java.util.Vector.elementAt(Vector.java:430)
	at javax.swing.JTabbedPane.getTitleAt(JTabbedPane.java:1091)
	at epistle.MessageBox$2.stateChanged(MessageBox.java:79)
	at javax.swing.JTabbedPane.fireStateChanged(JTabbedPane.java:400)
	at javax.swing.JTabbedPane$ModelListener.stateChanged(JTabbedPane.java:253)
	at javax.swing.DefaultSingleSelectionModel.fireStateChanged(DefaultSingleSelectionModel.java:116)
	at javax.swing.DefaultSingleSelectionModel.setSelectedIndex(DefaultSingleSelectionModel.java:50)
	at javax.swing.JTabbedPane.setSelectedIndexImpl(JTabbedPane.java:599)
	at javax.swing.JTabbedPane.removeTabAt(JTabbedPane.java:958)
	at javax.swing.JTabbedPane.remove(JTabbedPane.java:1030)
	at epistle.TabChat.clearTab(Tampilan.java:878)
	at epistle.MessageBox.closeChat(MessageBox.java:150)
	at epistle.MessageBox$1.windowClosing(MessageBox.java:52)
	at java.awt.AWTEventMulticaster.windowClosing(AWTEventMulticaster.java:332)
	at java.awt.Window.processWindowEvent(Window.java:1862)
	at javax.swing.JFrame.processWindowEvent(JFrame.java:279)
	at java.awt.Window.processEvent(Window.java:1820)
	at java.awt.Component.dispatchEventImpl(Component.java:4630)
	at java.awt.Container.dispatchEventImpl(Container.java:2099)
	at java.awt.Window.dispatchEventImpl(Window.java:2475)
	at java.awt.Component.dispatchEvent(Component.java:4460)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

Is the JTabbedPane doesn't allow empty tab state? When I make the JTabbedPane first time, it doesn't have tab right?

Hope someone can help me,
thanks

Looking at the stack trace I don't see a call to the removeAll method. Are you sure that is where the error is happening?

I just wrote a small test program and used removeAll() with no problem.
I must be something else causes the error.

Can you make and post here a small program to demo the problem?

Originally Posted by Norm

I just wrote a small test program and used removeAll() with no problem.
I must be something else causes the error.

Can you make and post here a small program to demo the problem?

I don't use my customized tab, just use normal JTabbedPane

public class Main
{	
	public Main(){
	}
 
	public static void main(String[] args)
	{
		final Tampilan tpl = new Tampilan();
 
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                tpl.showLogin();
            }
        });
 
	}

Tampilan is too long, in short it just make the buddy list with JTree in it, it then call a function to make the message box

	public void createMessageBox()
	{	
		messageBox = new MessageBox();
	}

the messagebox class I created is like this, I removed the code for decorating the box

public class MessageBox extends JFrame
{
	private static final long serialVersionUID = 1L;
	JTabbedPane tabChat;
	JFrame openerFrame;
 
	public MessageBox()
	{
		super();
		this.setSize(450, 350);
		this.setResizable(true);
		this.setLocationRelativeTo(null);
		this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
 
		tabChat = new JTabbedPane();
		tabChat.addChangeListener(new ChangeListener() { 
			// This method is called whenever the selected tab changes
			public void stateChanged(ChangeEvent evt) { 
				JTabbedPane pane = (JTabbedPane)evt.getSource(); 
 
				// Get current tab 
				int sel = pane.getSelectedIndex(); 
				setJudul(pane.getTitleAt(sel));
		} });
		this.add(tabChat);
	}
 
	public void setJudul(String judul)
	{
		this.setTitle(judul);
	}
 
	public void closeChat()
	{
		this.setVisible(false);
		tabChat.removeAll();
	}
 
	public void openChat(String namaUserLawan)
	{	
		tabChat.add(namaUserLawan, new javax.swing.JLabel(""));
		this.setVisible(true);
	}
}

Btw because of testing the code I found out that removing the listener solves the problem

tabChat.addChangeListener

Is there something I can do to fix this?

Thanks

I fixed my problem by just adding this

				if (sel > 0)
				setJudul(pane.getTitleAt(sel))

Thanks a lot

Look at this part of the error message:

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: -1
at java.util.Vector.elementAt(Vector.java:430)
at javax.swing.JTabbedPane.getTitleAt(JTabbedPane.jav a:1091)
at epistle.MessageBox$2.stateChanged(MessageBox.java: 79)

It says that the listener at line 79 did a getTitleAt() with -1.
Add code to test the value of the selected index.


BTW 0 is a valid index.

Originally Posted by Norm

Look at this part of the error message:

It says that the listener at line 79 did a getTitleAt() with -1.
Add code to test the value of the selected index.


BTW 0 is a valid index.

Never mind that.. It's already solved, I got problem with the listener(see the code above)
Thanks