Changing a JLabel?

Question

Im trying to update a JLabel as my mouse moves this is what I have.
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.JLabel;
import java.awt.*;
import java.io.IOException;
import java.net.MalformedURLException;
public class RightPanelEarth extends JPanel
     private static class RightPanelHolder
       private static RightPanelEarth instance = new RightPanelEarth();
    public static RightPanelEarth getInstance()
      return RightPanelHolder.instance;
private int xcoord;
private int ycoord;
private final JLabel coordLabel = new JLabel("X,Y");
     public RightPanelEarth()
         this.add(new JButton("Button"));
         this.add(coordLabel);
    public void setCoords(int x, int y)
     this.xcoord = x;
     this.ycoord = y;
     updateCoord();
    public void updateCoord()
        coordLabel.setText(this.xcoord+","+this.ycoord);
        System.out.println((this.xcoord)+","+(this.ycoord));
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.JButton;
import javax.swing.JComponent;
import java.awt.*;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.ArrayList;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class LeftPanelEarth extends JPanel
     private static class LeftPanelHolder
       private static LeftPanelEarth instance = new LeftPanelEarth();
    public static LeftPanelEarth getInstance()
      return LeftPanelHolder.instance;
Image map;
     public LeftPanelEarth()
         try
      map = javax.imageio.ImageIO.read(new java.net.URL(getClass().getResource("MyImage.jpg"), "MyImage.jpg"));
    catch(Exception e){}
    addMouseMotionListener(new CoordListener());
     class CoordListener extends MouseAdapter {
     public void mouseMoved(MouseEvent e) {
         RightPanelEarth rightPanel = RightPanelEarth.getInstance();
         rightPanel.setCoords(e.getX(), e.getY());
     public void paintComponent(Graphics g)
    super.paintComponent(g);
    if(map != null) g.drawImage(map, 0,0,this.getWidth(),this.getHeight(),this);
}It works fine but it wont change the JLabel, I have a System.out.println just to make shur it works and it does. Any idea on how I can get the Label to change?

Answer 1

Simple demo:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
public class MMLTest extends JFrame
  JLabel label = new JLabel("x,y");
  public MMLTest()
    super("Where's the mouse?");
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    JPanel mousePanel = new JPanel();
    mousePanel.setBorder(new LineBorder(Color.BLUE, 1));
    mousePanel.addMouseMotionListener(new MouseMotionAdapter(){
      public void mouseMoved(MouseEvent e)
        label.setText(e.getX() + ", " + e.getY());
    JPanel panel = new JPanel(new BorderLayout());
    panel.add(label, BorderLayout.WEST);
    Container c = getContentPane();
    c.setLayout(new BorderLayout());
    c.add(mousePanel, BorderLayout.CENTER);
    c.add(panel, BorderLayout.SOUTH);
    setSize(400,200);
  public static void main( String[] args )
    MMLTest frame = new MMLTest();
    frame.setVisible(true);
}