Drawing line with button??

Question

Hi all.
Why won't this class draw a line when i click the mouse button. Nothing happens when i click on the panel.
import java.util.*;
import java.awt.*;
import javax.swing.JPanel;
import javax.swing.*;
import javax.swing.Action.*;
import java.awt.event.*;
import java.awt.event.MouseAdapter;
public class DrawingPanel extends JPanel implements Observer
  private ViewableEtch etch;
  private ClearPanel clear;
  public DrawingPanel(ViewableEtch etch, ClearPanel clear)
    this.etch = etch;
    this.clear = clear;
   etch.addView(this);
    clear.addView(this);
    setLayout(new FlowLayout());
    setLayout(new GridLayout(200,200));
      //etch.addActionListener(this);
        DrawingControl dc = new DrawingControl();
    public void update(Observable obs, Object obj)
     Views v = (Views)obs;
     if (v.getSource() == etch)
     //etch.getLineColor();
       getGraphics().setColor(etch.getLineColor() );
       getGraphics().drawLine(etch.getStartX(), etch.getStartY(), etch.getEndX(), etch.getEndY());
     else
       v.getSource().equals(clear);
public void mouseClicked(MouseEvent e)
//etch.setLine(new etch(getStartX(), getStartY(), e.getEndX(), e.getEndY()));
getGraphics().drawLine(etch.getStartX(), etch.getStartY(), etch.getEndX(), etch.getEndY());
}thanx

Answer 1

This should work
public class MyPanel extends JPanel implements MouseListener {
   public MyPanel() {
      addMouseListener(this);
   public void mouseClicked(MouseEvent e) {
      // Add code here
   public void mouseEntered(MouseEvent e) {}
   public void mouseExited(MouseEvent e) {}
   public void mousePressed(MouseEvent e) {}
   public void mouseReleased(MouseEvent e) {}