When using CTRL-V to paste text from the system clipboard that has been setup using the APIs from the Java Clipboard class to a Java text input area, the whole application hangs. If I use the "Copy" key on the Sun keyboard to setup the system clipboard then everything is working fine. By the way, the application doesn't hangs if I use the "Paste" key.

To reproduce the bug:
1. Compile the "CopyPasteBug" program using either JDK 1.1.1 or JDK 1.1.2
2. Run the application
3. Type a few words in the text area
4. Select a word from the the text area and click on the "Copy" button
5. Click on the "Paste" button, and notice that everything is working fine
6. Press on the "Paste" key on the Sun keyboard, and it also works as expected
7. Now press CTRL-V, and notice how the application hangs


Source codes for CopyPasteBug.java:

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
import java.awt.datatransfer.*;

public class CopyPasteBug extends Frame
    implements ClipboardOwner, ActionListener
{
    TextArea textArea;

    public CopyPasteBug()
    {
        setTitle( "CopyPasteBug" );

        textArea = new TextArea( 20, 40 );

        Button copybutton = new Button( "Copy" );
        copybutton.addActionListener( this );
        Button pastebutton = new Button( "Paste" );
        pastebutton.addActionListener( this );
        Button clearbutton = new Button( "Clear" );
        clearbutton.addActionListener( this );

        Panel panel = new Panel();
        panel.add( copybutton );
        panel.add( pastebutton );
        panel.add( clearbutton );

        add( "North", textArea );
        add( "South", panel );
    }

    public void actionPerformed( ActionEvent evt )
    {
        String cmd = evt.getActionCommand();

        if ( cmd.equals( "Copy" ) )
        {
            String selection = textArea.getSelectedText();
            if (selection != null)
            {
                StringSelection contents = new StringSelection(selection);
                getToolkit().getSystemClipboard().setContents(contents, this);
            }
        }
        else
        if ( cmd.equals( "Paste" ) )
        {
            Transferable contents =
                getToolkit().getSystemClipboard().getContents( this );

            if ( contents != null )
            {
                try
                {
                    String selection = (String)contents.getTransferData(
                        DataFlavor.stringFlavor );
                    if (selection != null)
                        textArea.insert(selection, textArea.getCaretPosition());
                }
                catch ( Exception e )
                {
                    textArea.setText( "Error pasting:\n" + e.toString() );
                }
            }
        }
        else
        if ( cmd.equals( "Clear" ) )
        {
            textArea.setText("");
        }
    }

    public void lostOwnership(Clipboard clipboard, Transferable contents)
    {
    }

    public static void main( String[] args )
    {
        Frame f = new CopyPasteBug();
        f.pack();
        f.show();
    }
}