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

public class Login{
    String Username = "naufalpf";
    String Password = "pass";
    String msg = " ";

      JTextField txtUsername = null;
      JTextField txtPassword = null;
    public static void main(String[] args){
        Login gui = new Login();
        gui.go();
    }
    public void go(){
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JPanel panel = new JPanel();
        JLabel lblUsername = new JLabel("Username:");
        JLabel lblPassword = new JLabel("Password:");
        JTextField txtUsername = new JTextField(20);
        JTextField txtPassword = new JTextField(20);
        JButton btnLogin = new JButton("Login");
        btnLogin.addActionListener(new LoginListener());
        JButton btnCancel = new JButton("Cancel");
        btnCancel.addActionListener(new CancelListener());


        panel.add(lblUsername);
        panel.add(txtUsername);
        panel.add(lblPassword);
        panel.add(txtPassword);
        frame.getContentPane().add(BorderLayout.CENTER,panel);



        frame.setSize(300,300);
        frame.setVisible(true);

  txtUsername = new JTextField(20);
  txtPassword = new JTextField(20);
    }

    public class LoginListener implements ActionListener{
        public void actionPerformed(ActionEvent event){
            if(Username.equals(txtUsername.getText())){
                if(Password.equals(txtPassword.getText())){
                    msg = "Login Granted!";
                }else{
                    msg = "Login Denied";
                }
            }else{
                msg = "Login Denied";
            }
            JOptionPane.showMessageDialog(null,msg);
        }
    }
    public class CancelListener implements ActionListener{
        public void actionPerformed(ActionEvent event){
            txtUsername.setText("");
            txtPassword.setText("");
            txtUsername.requestFocus();
        }
    }
}