想做QQ登陆框，
package com.xaeduask;

import java.awt.Container;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class QQ {

    public static void main(String[] args) {
        JFrame jf=new JFrame("QQ2012");
        jf.setLayout(null);
        
        ImageIcon img1=new ImageIcon("src/img/630.jpg");
        ImageIcon img2=new ImageIcon("src/img/tou.jpg");
        
        JLabel jl1=new JLabel(img1);
        jl1.setBounds(0, 0, 382, 282);
        Container con=jf.getContentPane();
        con.getBackground();
        con.add(jl1);
        
        
               
        jf.setVisible(true);
        jf.setSize(382,282);
        jf.setLocationRelativeTo(null);
        jf.setDefaultCloseOperation(3);
    }
}
想在背景图上放一个janbel ，但是想弄成透明的，jpanel能放组件，也能看到后面的背景图，求解高手！

看来得要重绘组件了！