( (JTextPane in JScrollPane) in JTabbedPane)???

Question

JTextPane textarea = new JTextPane();
JScrollPane scroll= new JScrollPane(textarea);
JTabbedPane tab = new JTabbedPane();
tab.add(scroll);
Now the problem is when i create many tabs and put
it in my window , and i want to jump from one tab to
another , the textpane does not get the focus .
tab contains scroll as its client so it gives focus to the
scroll but i want the textarea to have the cursor.so that there is no need for the user to click in the textarea to gain focus.
I hope some one understands my problem and helps me ...
thanks alot......

Answer 1

I'm running JDK1.3 on windows 98. The requestFocus() method does not work unless it is executed after the JFrame is shown. Maybe this is your problem. The following sample program will help illustrate this.
1) run the program as is. Focus should be on the text area as you select a tab.
2) Comment out the 'newTab' methods in the main method. Uncomment the 'newTab' methods in the constructor. This time focus will remain on the tab as you select it.
Hope this helps.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
public class TestTabbedPane extends JFrame
     JTabbedPane tabbedPane;
     public TestTabbedPane()
          tabbedPane = new JTabbedPane();
          tabbedPane.setPreferredSize( new Dimension(300, 200) );
          getContentPane().add(tabbedPane);
//          newTab( "one" );
//          newTab( "two" );
//          newTab( "three" );
     private void newTab(String text)
          JTextArea textArea = new JTextArea( text );
          JScrollPane scrollPane = new JScrollPane( textArea );
          tabbedPane.addTab( text, scrollPane );
          tabbedPane.setSelectedIndex( tabbedPane.getTabCount() - 1 );
          textArea.requestFocus();
     public static void main(String args[])
TestTabbedPane frame = new TestTabbedPane();
frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
frame.pack();
frame.setVisible(true);
          frame.newTab( "one" );
          frame.newTab( "two" );
          frame.newTab( "three" );