javaGUI解决闪屏问题

javaGUI解决闪屏问题可以通过继承JPanel来实现，特别简单，因为JPanel有已经实现的解决闪屏的方法

  JFrame jfm=new JFrame();
  this.setDoubleBuffered(true);

package demo.wl;

import java.awt.Color;
import java.awt.Graphics;

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

public class DemoGUI extends JPanel{
    public void init(){
         JFrame jfm=new JFrame();
         //this.setDoubleBuffered(true);//这个就是JPnel自带的双缓冲技术
         jfm.add(this);//把JPanel组件加到窗口上来
         jfm.setTitle("GUI");
         jfm.setVisible(true);
         jfm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         jfm.setBounds(0, 8, 820, 620);
         jfm.setLocationRelativeTo(null);
         jfm.setResizable(false);
         new Thread(new MyThread()).start();
    }
    public static void main(String[] args) {
        new DemoGUI().init();
    }
    @Override
    public void paint(Graphics g) {
        super.paint(g);
        g.setColor(Color.GRAY);
        g.drawRect(20, 40, 750, 525);
        g.fillRect(200, 110, 50,50);
        for(int i=1;i<=50;i++){
            for(int j=1;j<=35;j++){
                g.drawLine(20,15*j+40,770, 15*j+40);
            }
            g.drawLine(20+15*i, 40, 20+15*i, 565);
        }
    }
    public class MyThread implements Runnable{
        @Override
        public void run() {
                while(true){
                    repaint();
                    try {
                        Thread.sleep(1);
                    } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }
        }
    }
}