import java.awt.*;
import javax.swing.*;
public class TextDemo extends JFrame {
    JTextField lblName, lblPassword;
    JTextField txtName;
    JPasswordField pwdPassword;
    JPanel pnlMain;
    public static void main(String args[]){
            TextDemo t=new TextDemo();
        }
    public TextDemo() {
        lblName = new JTextField("用戶名:");
        txtName=new JTextField(4);
        lblPassword = new JTextField("密 碼:");
        lblPassword=new JTextField(8);
        lblName.setEditable(false);
        lblPassword.setEditable(false);
         Font font = new Font("黑體",Font.PLAIN,16);
        pnlMain=new JPanel();
        pnlMain.add(lblName);
        pnlMain.add(txtName);
        pnlMain.add(lblPassword);
        pnlMain.add(pwdPassword);
        this.setContentPane(pnlMain);
        setSize(300,300);
        setVisible(true);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        }
       
}