【Java】利用Swing实现登录页面

约定不等于承诺〃 2022-08-28 11:44 209阅读 0赞

**Main.java**

class Main {
    
            public static void main(String[] args) {
                new FrameTest();
            }
    }

**FrameTest.java**

package com.company;
    
    import javax.swing.*;
    import java.awt.*;
    
    class FrameTest {
        JFrame frame =new JFrame("登录");
        Container c = frame.getContentPane();//创建视图
        JLabel userLabel=new JLabel("用户名");
        JTextField username= new JTextField();
        JLabel passwdLabel=new JLabel("密码");
        JPasswordField password=new JPasswordField();
        JButton okbutton = new JButton("确定");
        JButton cancelbttton = new JButton("取消");
        public FrameTest(){
            frame.setBounds(600, 200, 300, 220);//设置窗体位置&大小
            c.setLayout(new BorderLayout());//设置视图的布局
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//设置❌功能
            init();//初始化，把控件放在布局里
            frame.setVisible(true);//设置窗体可见
        }
        public void init(){
    //        标题——上方
            JPanel titlePanel =new JPanel();//创建一个放置标题的面板
            titlePanel.setLayout(new FlowLayout());
            titlePanel.add(new JLabel("欢哥OS"));
            c.add(titlePanel, "North");//加入视图中
    //        输入框——中间
            JPanel inputPanel =new JPanel();
            inputPanel.setLayout(null);
            userLabel.setBounds(50, 20, 50, 20);//标签位置
            passwdLabel.setBounds(50, 60, 50, 20);
            inputPanel.add(userLabel);
            inputPanel.add(passwdLabel);
            username.setBounds(110, 20, 120, 20);
            password.setBounds(110, 60, 120, 20);
            inputPanel.add(username);
            inputPanel.add(password);
            c.add(inputPanel, "Center");
    //        按钮底部
            JPanel buttonPanel =new JPanel();
            buttonPanel.setLayout(new FlowLayout());
            buttonPanel.add(okbutton);
            buttonPanel.add(cancelbttton);
            c.add(buttonPanel, "South");
        }
    }

![4cae758d4e9c36d2a0cfcdea75618208.png][]

[4cae758d4e9c36d2a0cfcdea75618208.png]: /images/20220828/0aa43df021c04cc59cb2b14194a29944.png