Dragging a JLable makes it bounce?

Question

I'm not sure if this is the best forum for this topic, but I think it's a swing problem more than an Event problem. I have JLabel that I want to drag around on top of a JPanel. But whenever I drag the component it doesn't move with the mouse, it bounces back and forth. Here is the code.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class TestTab extends JPanel{
     JLabel j = new JLabel("Test");
     int X = 20;
     int Y = 20;
     public TestTab(){
          j.addMouseMotionListener(new DragMouse());
          this.add(j);
     public void paintComponent(Graphics     g) {
          super.paintComponent(g);
          j.setLocation(X,Y);
     class DragMouse implements MouseMotionListener{
          public void mousePressed(MouseEvent e){
               System.out.println(e.getSource());
          public void mouseDragged(MouseEvent e){
               X = e.getX();
               Y = e.getY();
               System.out.println(X + ", " + Y);
               repaint();
          public void     mouseMoved(MouseEvent e){}     // ignore these     events
}Here's the app that uses it.
import javax.swing.*;
import java.awt.event.*;
public class Test extends JFrame{
     public static void main(String args[]) {
          new Test().setVisible(true);
     public Test(){
          // Window Properties
          Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
          setBounds((screenSize.width-600)/2, (screenSize.height-450)/2, 300, 450);
          setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
          setResizable(false);
          this.setContentPane(new TestTab());
}As you can see I print out the coordinate, and here's what is spits out.
65, 89
103, 233
66, 90
104, 235
67, 90
105, 237
72, 95
106, 239
73, 97
107, 239
74, 99
111, 243
74, 100
112, 245
75, 100
113, 247
79, 104
115, 253
80, 104
115, 252
Thanks for any insight into this problem.

Answer 1

Thank you for that tip. I was able to get it to work by doing something similar.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class TestTab extends JPanel{
     MouseEvent pressed;
     Point location;
     JLabel j = new JLabel("Test");
     int X = 20;
     int Y = 20;
     public TestTab(){
          j.addMouseListener(new DragMouse());
          j.addMouseMotionListener(new DragMouse());
          this.add(j);
     public void paintComponent(Graphics g) {
          super.paintComponent(g);
          j.setLocation(X,Y);
     class DragMouse implements MouseListener, MouseMotionListener{
          public void mousePressed(MouseEvent me){
               pressed = me;
          public void mouseDragged(MouseEvent me){
               location = j.getLocation(location);
               X = location.x - pressed.getX() + me.getX();
               Y = location.y - pressed.getY() + me.getY();
               System.out.println(X + ", " + Y);
               repaint();               
          public void mouseMoved(MouseEvent e){}
          public void mouseExited(MouseEvent e){}
          public void mouseEntered(MouseEvent e){}
          public void mouseReleased(MouseEvent e){}
          public void mouseClicked(MouseEvent e){}
}