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

public class ButtonDrag
{
  private JButton m_jb = new JButton("Help!");
  public ButtonDrag ()
  {
    JFrame frame = new JFrame("Event Test");
    Container content = frame.getContentPane();
    content.setLayout(null);
    frame.setSize(300,300);

    content.add(m_jb);
    m_jb.setSize(80, 20);
    m_jb.setLocation(0,0);

    m_jb.addMouseMotionListener(new MouseMotionListener() {
        public void mouseDragged(MouseEvent me)
          {
            Point p = m_jb.getLocation();
            m_jb.setLocation(p.x+me.getX(), p.y+me.getY());
          }
        public void mouseMoved(MouseEvent me) {}
      });

    frame.setVisible(true);
  }
  
  public static void main(String[] args)
  {
    new ButtonDrag();
  }
}