java添加背景,帮帮忙
import java.awt.*;import java.awt.event.*;
import javax.swing.*;
public class qq<BackgroundPanel> extends JFrame {
private JPanel jPanel1;
private JPanel jPanel2;
private JPanel jPanel3;
private ImageIcon background;
public static void main(String[] args) {
qq text=new qq();
text.setLocationRelativeTo(null);
text.setVisible(true);
}
private qq()
{
super();
init();
}
private void init(){
try{
setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
{
jPanel1 = new JPanel();
getContentPane().add(jPanel1, BorderLayout.CENTER);
jPanel1.setLayout(null);
{
// background=new ImageIcon("picture/1.png");
jPanel2=new JPanel(){
public void paintComponents(Graphics g) {
Image img = new ImageIcon("2.jpg").getImage();
super.paintComponent(g);
g.drawImage(img,0,0,this);
}
};
jPanel1.add(jPanel2);
// jPanel2.setBackground(java.awt.Color.BLUE);
jPanel2.setBounds(0, 0, 300, 75);
}
}
pack();
setSize(300, 620);
}catch (Exception e) {
e.printStackTrace();
}
}
}
没有背景啊!!!高手帮忙啊