Trouble during dragging JWindow with my own title bar!

Question

Hello Everyone!
While I drag window something like a conture remains behind, aspecially on white background.
Similar code in VB works perfectly.
import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
class NoTitleBar extends JWindow
  JLabel label = new JLabel("Title Bar  ");
    public static void main(String[] args)
      new NoTitleBar();
  public NoTitleBar()
      getContentPane().setLayout(null);
      label.setHorizontalAlignment(JLabel.CENTER);
      label.setBounds(0,0,400,25);
      label.setOpaque(true);
      label.setBackground(Color.blue);
      label.setForeground(Color.white);
      label.setBorder(BorderFactory.createBevelBorder(BevelBorder.RAISED,new Color(100,100,255),new Color(0,0,100)));
      BevelBorder bb = new BevelBorder(BevelBorder.RAISED, Color.blue,Color.blue);
      getContentPane().setBackground(Color.pink);
      getContentPane().add(label);
      setBounds(0,0,400,400);
      setVisible(true);
      label.addMouseListener(new labelListener());
      label.addMouseMotionListener(new labelMotionListener());
      addMouseListener(new MouseAdapter(){
               public void mouseReleased(MouseEvent me){
                 dispose();
                 System.exit(0);
    boolean moved = false;
    int coorX, coorY;
    class labelListener extends MouseAdapter
        public void mousePressed(MouseEvent me)
            moved = true;
            coorX = me.getX();
            coorY = me.getY();
        public void mouseReleased(MouseEvent me)
            moved = false;
    class labelMotionListener extends MouseMotionAdapter
        public void mouseDragged(MouseEvent me)
            if (moved){
              Point p = getLocation();
              setLocation((int)p.getX()+ me.getX()-coorX,(int)p.getY()+ me.getY()-coorY);

Answer 1

Works ok on my platform: NT 4, JDK 1.3.1_02. What are you running on/with?