Java Swing 之设置窗体背景图片

/**
* 设置窗体背景图片
* @author gao
*/
package com.gao;

import java.awt.Graphics;
import java.awt.Image;

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

public class BackgroundDemo extends JFrame{
private Image image;
private static final long serialVersionUID=-1588458291133087637L;
public BackgroundDemo(){
this.setTitle("设置窗体的背景颜色");
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setBounds(0 , 0, 400,300 );

JPanel contentPane=new JPanel(){
@Override
public void paint(Graphics g) {
ImageIcon icon=new ImageIcon("2.jpg");
image=icon.getImage();
g.drawImage(image, 0,0,null);
// TODO Auto-generated method stub

}
};
this.add(contentPane);
this.setVisible(true);
}

public static void main(String[]args){
BackgroundDemo example=new BackgroundDemo();

}
}