java实现一个简单的登录界面

虽然现在已经基本都不用java去写界面了，但是还是想去试试，不是情怀而是态度

public class Test {    public static void main(String[] args) {        JFrame frame = new JFrame();        frame.setSize(250, 125);        JPanel panelFirst = new JPanel();//存放用户名密码        JPanel panelSecond = new JPanel();//存放按钮        panelFirst.setLayout(new GridLayout(2, 2));        JLabel userLabel = new JLabel("username");        JLabel passLabel = new JLabel("password");        JTextField userText = new JTextField();        JTextField passText = new JTextField();        panelFirst.add(userLabel);        panelFirst.add(userText);        panelFirst.add(passLabel);        panelFirst.add(passText);        panelSecond.setLayout(new FlowLayout());        Button reg = new Button("Register");        Button login = new Button("Login");        Button cancel = new Button("Cancel");        panelSecond.add(reg);        panelSecond.add(login);        panelSecond.add(cancel);        frame.setLayout(new BorderLayout());        frame.add(panelSecond, BorderLayout.SOUTH);        frame.add(panelFirst, BorderLayout.NORTH);        frame.setVisible(true);    }}