Javax. swing. JComponent call sequence, javax. swing

Source: Internet
Author: User

Javax. swing. JComponent call sequence, javax. swing

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Java swing feels complicated ............ I don't want to use it at all, but I want to use it for my job >_<;

Javax. swing. JComponent class
Repaint () calls update ()
Update () call paint ()
Paint () calls paintComponent (), paintBorder (), and paintChildren ()


Code attachment

 1 package com.test; 2 import java.awt.Color; 3 import java.awt.Graphics; 4  5 import javax.swing.JFrame; 6 import javax.swing.JPanel; 7  8 public class GamePanel extends JPanel{ 9 10     private static final long serialVersionUID = 1L;11     public GamePanel(){12     13     }14 15     public void display(){    16         System.out.println("GmaePanel - display");17         18         this.repaint();19     }20 21     @Override22     protected void paintComponent(Graphics g) {23         24         System.out.println("GamePanel - ------------paintComponent");25         26         g.setColor(new Color(0xcfcfcf));    27     }    28     29     @Override30     public void paint(Graphics g) {31         System.out.println("GamePanel - ------------paint");32         super.paint(g);33     }34 35     @Override36     public void update(Graphics g) {37         System.out.println("GamePanel - ------------update");38         super.update(g);39     }40 41     public static void main(String[] args){42         JFrame frame = new JFrame();43         frame.setSize(300,300);44         GamePanel gp = new GamePanel();45         frame.add(gp);46         frame.setVisible(true);47         gp.display();48     }49 }


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