QQLogin

import java.awt.*;
import javax.swing.*;

public class QQLogin extends JFrame{
    QQLogin(){
        this.setSize(300 , 400);

        //new 组件
        JLabel labUser = new JLabel("   Username");
        JLabel labPass = new JLabel("   Password");

        JTextField txtUser = new JTextField();
        JPasswordField txtPass = new JPasswordField();

        JButton btnLogin = new JButton("Sign in");
        JButton btnReg = new JButton("Sign up");
        JButton btnCancel = new JButton("Cancel");

        //布置输入面板
        JPanel panInput = new JPanel();
        panInput.setLayout(new GridLayout(2 , 2));

        panInput.add(labUser);
        panInput.add(txtUser);
        panInput.add(labPass);
        panInput.add(txtPass);

        //布置按钮面板
        JPanel panButton = new JPanel();
        panButton.setLayout(new FlowLayout());

        panButton.add(btnLogin);
        panButton.add(btnReg);
        panButton.add(btnCancel);

        //布置窗体
        this.setLayout(new BorderLayout());

        this.add(panInput , BorderLayout.CENTER);
        this.add(panButton , BorderLayout.SOUTH);

        //装饰窗体
        this.setLocationRelativeTo(null);

        this.setSize(440 , 165);
        this.setTitle("Tokyo.GHOUL");
        this.setResizable(false);
        //设置窗体LOGO
        this.setIconImage(this.getToolkit().getImage("D:/lab_2/psb (11).jpg"));

    }
    public static void main(String[] args){
        QQLogin w = new QQLogin();
        w.setVisible(true);
    }
}