登录界面

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import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

import javax.swing.*;

public class DengLu {

public static void main(String[]args){
final JFrame frm=new JFrame("系统登录");
frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

JPanel soPanel = new JPanel();

frm.add(soPanel,BorderLayout.NORTH);

JPanel topPanel = new JPanel();
frm.add(topPanel,BorderLayout.EAST );
//图
Icon t3 = new ImageIcon("1191333.gif");
JLabel l71 = new JLabel(t3);
l71.setBounds(0,0,t3.getIconWidth(),t3.getIconHeight());
soPanel.add(l71);


JPanel wp = new JPanel(new FlowLayout(FlowLayout.CENTER));
JPanel iwp = new JPanel();
wp.add(iwp);
iwp.setLayout(new GridLayout(4, 1));
JPanel p1 = new JPanel();
JPanel p2 = new JPanel();
JPanel p3 = new JPanel();
JPanel p4 = new JPanel();
JLabel l1 = new JLabel("账号");
JLabel l2 = new JLabel("密码");
final JTextField j = new JTextField(15);
final JPasswordField j1 =new JPasswordField(15);
JCheckBox jc1 = new JCheckBox("记住密码");
JCheckBox jc2 = new JCheckBox("自动登录");
JButton jb = new JButton("登录");
JButton jb1 = new JButton("退出");
//事件处理弹窗

jb.addMouseListener(new MouseListener() {
@Override
public void mouseReleased(MouseEvent arg0) {
if(j.getText().equals("notebook")&&
String.valueOf(j1.getPassword()).equals("123"))
{
frm.setVisible(false);
Icon icon=new ImageIcon("1966053082.jpg");
JOptionPane.showMessageDialog(null, "登陆成功",
"欢迎回来",JOptionPane.INFORMATION_MESSAGE,icon);
}
else
{
JOptionPane.showMessageDialog(null, "密码错误",
"错误",JOptionPane.ERROR_MESSAGE);
}
}

@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub

}

@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub

}

@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub

}

@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub

}});

p1.add(l1);
p1.add(j);
iwp.add(p1);
p2.add(l2);
p2.add(j1);
iwp.add(p2);
p3.add(jc1);
p3.add(jc2);
iwp.add(p3);
p4.add(jb);
p4.add(jb1);
iwp.add(p4);

frm.add(wp, BorderLayout.CENTER);

ButtonHandler jb1Handler=new ButtonHandler();

jb1.addActionListener(jb1Handler);
frm.setBounds(400,200,500,400);
frm.setVisible(true);

}
}
class ButtonHandler implements ActionListener{
public void actionPerformed(ActionEvent e){
System.exit(0);
}
}

登录界面

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原文地址：http://www.cnblogs.com/wanke/p/5304324.html