javax.swing.JComponent 调用顺序

网上截取的，感觉挺有用，记录下来。

http://bbs.****.net/topics/310041707

java swing 感觉好复杂啊…………一点都不想用但是作业要用到 >_<;

javax.swing.JComponent类中
repaint()调用update() 
update()调用paint() 
paint()调用paintComponent(),paintBorder(),及paintChildren()

附代码

 package com.test;
 import java.awt.Color;
 import java.awt.Graphics;

 import javax.swing.JFrame;
 import javax.swing.JPanel;

 public class GamePanel extends JPanel{

     private static final long serialVersionUID = 1L;
     public GamePanel(){

     }

     public void display(){
         System.out.println("GmaePanel - display");

         this.repaint();
     }

     @Override
     protected void paintComponent(Graphics g) {

         System.out.println("GamePanel - ------------paintComponent");

         g.setColor(new Color(0xcfcfcf));
     }    

     @Override
     public void paint(Graphics g) {
         System.out.println("GamePanel - ------------paint");
         super.paint(g);
     }

     @Override
     public void update(Graphics g) {
         System.out.println("GamePanel - ------------update");
         super.update(g);
     }

     public static void main(String[] args){
         JFrame frame = new JFrame();
         frame.setSize(300,300);
         GamePanel gp = new GamePanel();
         frame.add(gp);
         frame.setVisible(true);
         gp.display();
     }
 }