package com.itheima04;
import javax.swing.*;
public class UserLoginFrame extends JFrame {
public UserLoginFrame() {
//窗体初始化
initframe();
//绘制窗体
paintView();
//添加按钮到窗体中
this.setVisible(true);
}
public void initframe() {
this.setTitle("用户登录");
this.setSize(400, 300);
this.setDefaultCloseOperation(3);
this.setLocationRelativeTo(null);
this.setAlwaysOnTop(true);
this.setLayout(null); //取消窗体的默认布局
}
public void paintView() {
//显示用户名文本
JLabel usernameLabel = new JLabel("用户名");
usernameLabel.setBounds(50, 50, 50, 20);
this.add(usernameLabel);
//用户名输入框
JTextField usernameField = new JTextField();
usernameField.setBounds(150, 50, 180, 20);
this.add(usernameField);
//显示密码文本
JLabel passwordLabel = new JLabel("密码");
passwordLabel.setBounds(50, 100, 50, 20);
this.add(passwordLabel);
JPasswordField passwordField = new JPasswordField(); //密码输入框用JPasswordField 加密显示
passwordField.setBounds(150, 100, 180, 20);
this.add(passwordField);
//登录按钮
JButton LoginButton = new JButton("登录");
LoginButton.setBounds(50, 200, 280, 20);
this.add(LoginButton);
}
}
代码2
package com.itheima04;
public class App {
public static void main(String[] args) {
UserLoginFrame userloginframe = new UserLoginFrame();
}
}
执行结果