示例示例以下是一个简单的java登录页面代码示例：import java.awt.*;
以下是一个简单的java登录页面代码示例：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public cl Login extends JFrame implements ActionListener{
JLabel l1,l2;
JTextField tf1;
JButton btn1;
JPwordField p1;
Login(){
setTitle("Login Form");
setVisible(true);
setSize(400, 300);
setLayout(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
l1 = new JLabel("Username");
l1.setForeground(Color.blue);
l1.setBounds(50,30,100,30);
add(l1);
tf1=new JTextField();
tf1.setBounds(150,30,150,30);
add(tf1);
l2 = new JLabel("Pword");
l2.setForeground(Color.blue);
l2.setBounds(50,70,100,30);
add(l2);
p1=new JPwordField();
p1.setBounds(150,70,150,30);
add(p1);
btn1=new JButton("Login");
btn1.setBounds(100,120,100,30);
btn1.addActionListener(this);
add(btn1);
}
public void actionPerformed(ActionEvent e) {
showData();
}
public void showData(){
String uname=tf1.getText();
String p=p1.getText();
if(uname.equals("admin") && p.equals("12345")){
JOptionPane.showMessageDialog(this,"Login Successful");
}
else{
JOptionPane.showMessageDialog(this,"invalid username or pword");
}
}
public static void main(String[] args) {
new Login();
}
}
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