求QQ登陆界面的Java GUI(图形用户界面开发)代码!

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Toolkit;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;

public class Demo extends JFrame{

Container contentPane;
ImageIcon img = new ImageIcon("002.jpg");

JPanel paneTop = new JPanel();
JPanel paneMid = new JPanel();
JPanel paneBut = new JPanel();
JPanel paneAll = new JPanel();

JLabel lblTop = new JLabel();
JLabel lblName = new JLabel();
JLabel lblPwd = new JLabel();
JLabel lblApply = new JLabel();
JLabel lblForget = new JLabel();
JLabel lblModel = new JLa