import javax.swing.*;

public class demo1 extends JFrame{
    
    JFrame frame ;
    JPanel panel;
    JLabel label_name;
    JLabel label_pass;
    JTextField nameField;
    JPasswordField passField;
    
     public  demo1(){
         
         frame = new JFrame();
         panel = new JPanel();
         label_name = new JLabel("用户名");
         label_pass = new JLabel("密码   ");
         nameField = new JTextField("name    ");
         passField = new JPasswordField("pass    ");
         
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);     
         frame.setSize(400, 400);
         frame.setVisible(true);
         
         frame.add(panel);
         
         panel.add(label_name);
         panel.add(nameField);
         panel.add(label_pass);
         panel.add(passField);
              
     }

    public static void main(String agrs[]) {

        //new demo1().launchFrame();
        new demo1();

    }

}