用java实现默认账号登录 java用户登录界面的代码

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
public class LoginIn extends JFrame{
JTextField f1;
JTextField f2;
JButton b1;
JButton b2;
String power;//表示权限
String imgePath = "e:/workspace/GUI/14.gif";
JPanel p5;
Image img = Toolkit.getDefaultToolkit().createImage(imgePath);
LoginIn(){
Container cp=getContentPane();
Label l1=new Label("用户：");
Label l2=new Label("密码：");
JPanel p1=new JPanel();
JPanel p2=new JPanel();
JPanel p3=new JPanel();
JPanel p4=new JPanel();
p5=new JPanel(){
protected void paintChildren(Graphics g) {
g.drawImage(img,0,0,this);
super.paintChildren(g);
}
};
f1=new JTextField(15);
f2=new JPasswordField(15);
b1=new JButton("登录");
b2=new JButton("重置");
p1.setBackground(Color.orange);
p2.add(l1);
p2.add(f1);
p2.setBorder(new MatteBorder(0,0,0,0,Color.BLACK));
p2.setBackground(Color.ORANGE);
p3.add(l2);
p3.add(f2);
p3.setBackground(Color.ORANGE);
p3.setBorder(new MatteBorder(0,0,0,0,Color.BLACK));
p4.add(b1);
p4.add(b2);
p4.setBorder(new MatteBorder(-3,-3,-3,-3,Color.CYAN));
p4.setBackground(Color.ORANGE);
p5.setLayout(new FlowLayout(FlowLayout.CENTER,20,20));
p5.add(p2);
p5.add(p3);
p5.add(p4);
cp.add(p5,BorderLayout.CENTER);
b1.addActionListener(new Enter());
b2.addActionListener(new ReWrite());
addWindowListener(new winClose());
}
public static void main(String[] args) {
LoginIn log=new LoginIn();
log.setTitle("系统登录");
log.setSize(360,250);
log.setVisible(true);
}
class Enter implements ActionListener{
public void actionPerformed(ActionEvent e)
{
if((f1.getText()).equals("admin")&&(f2.getText()).equals("123"))
{
JOptionPane.showMessageDialog(null, "登录成功！用户权限是adimistrator");
power="adminstrator";
}
else if((f1.getText()).equals("snake")&&(f2.getText()).equals("123456"))
{
JOptionPane.showMessageDialog(null, "登录成功!登录成功！用户权限是user");
power="adminstrator";
}
else JOptionPane.showMessageDialog(null, "登录失败，请重新登录！");
}
}
class ReWrite implements ActionListener{
public void actionPerformed(ActionEvent e)
{
f1.setText("");
f2.setText("");
f1.requestFocus();
}
}
class winClose extends WindowAdapter
{
public void windowClosing(WindowEvent e)
{
(e.getWindow()).dispose();
System.exit(0);
}
}
}