How can one optimize Swing-Answer this one

Question

How come i wrote a simple code extending JPanel as shown belo trying to render a new component but realized the running code was consuming like 88% of the processor time, using windows task manager. Is there a way to help swing eat less memory and processor time?
Lastly, i am trying to create my own look and feel or say new button by rendering a gif image on a panel with Graphics g object in paintComponent(g) and then attaching events to it, is it advisible to create new components like that?
import java.awt.*;
import javax.swing.*;
public class CustomP extends JPanel{
public void paintComponent(Graphics g)
super.paintComponent(g);
//some g.drawXXX dumps here
repaint();
//CustomB.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class CustomB extends JFrame{
private CustomP bpanel;
public CustomB()
super("New Button");
bpanel = new CustomP();
Container c = getContentPane();
c.add(bpanel,BorderLayout.CENTER);
setSize(90,90);
show();
public static void main(String args[]){
CustomB newb = new CustomB();
newb.addWindowListener(
new WindowAdapter(){
public void windowClosing(WindowEvent e){System.exit(0);}

Answer 1

http://forum.java.sun.com/thread.jsp?forum=31&thread=390432&tstart=0&trange=15
crosspost!!!!!!!