Have a common JScrollBar for more than one JList [urgent]

[netharam ram]

Hi, I have a JFrame which contains three Jlists,I want to add a Jscrollpane in common to the three Jlists.If the users scrolls down all the three list items should scroll down.Please reply me as soon as possible. :roll:
Happy middling with java.
Bye from Netharam.

[Paul Stevens]

Here is a piece of code I put together awhile ago that kept 2 scrollpanes in synch.

import javax.swing.*;
import java.awt.event.*;

/**
  *  ScrollBarListener - This class listens to scrollbar changes and keeps
  *                      2 scroll bars in sync. One is the master and the other
  *                      the slave. Its scrollbar is not enabled and it scrolls
  *                      based on the master.
  */
public class ScrollBarListener implements AdjustmentListener{
   private JScrollPane sp1;
   private JScrollPane sp2;
   private boolean isVertical_;

   /** ScrollBarListener constructor takes 2 scrollpanes
     */
   public ScrollBarListener (JScrollPane scrollPane1, JScrollPane scrollPane2) {
      sp1 = scrollPane1;
      sp2 = scrollPane2;
      isVertical_ = true;
   }
   /** ScrollBarListener constructor takes 2 scrollpanes
     */
   public ScrollBarListener (JScrollPane scrollPane1, JScrollPane scrollPane2, boolean isVertical) {
      sp1 = scrollPane1;
      sp2 = scrollPane2;
      isVertical_ = isVertical;
   }
   /** This method adjusts the slave scroll position.
     * @param AdjustmentEvent evt - The adjustment event.
     */
   public void adjustmentValueChanged (AdjustmentEvent evt) {
      JScrollBar sBar = (JScrollBar) evt.getSource();
      JScrollBar sBar2;
      if (isVertical_) {
         sBar2 = sp2.getVerticalScrollBar();
      } else {
         sBar2 = sp2.getHorizontalScrollBar();
      }
      sBar2.setValue(sBar.getValue());
   }
}

to use:
ScrollBarListener sbListener = new ScrollBarListener(masterSP, slaveSP);
    masterSP.getVerticalScrollBar().addAdjustmentListener(sbListener);

[netharam ram]

Thank you paul.I haven't used this file,hope this solves my problem.
Thankyou.
Happy middling with java.
Bye from Netharam.