Login Tugas 7

 import javax.swing.*;
 import java.awt.*;
 import java.awt.event.*;
/**
 * Class Login untuk melakukan login menggunakan gui
 *
 * @author Muhammad Naufaldillah
 * @version 5 December 2020
 */

public class Login
{
    String Username = "rcarr123";
    String Password = "Leopard321";
    String msg = " ";
    private JTextField txtUsername;
    private JPasswordField txtPassword;

    public static void main(String[] args)
    {
        Login gui = new Login();
        gui.go();
    }

    public void go()
    {
        JFrame frame = new JFrame("Selamat Datang di Aplikasi Login!");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JPanel panel = new JPanel();
        JLabel lblUsername = new JLabel("Username:");
        JLabel lblPassword = new JLabel("Password:");
        txtUsername = new JTextField(20);
        txtPassword = new JPasswordField(20);
        JButton btnLogin = new JButton("Login");
        btnLogin.addActionListener(new LoginListener());
        JButton btnCancel = new JButton("Cancel");
        btnCancel.addActionListener(new CancelListener());
        panel.add(lblUsername);
        panel.add(lblPassword);
        panel.add(txtUsername);
        panel.add(txtPassword);
        panel.add(btnLogin);
        panel.add(btnCancel);
        frame.getContentPane().add(BorderLayout.CENTER, panel);
        frame.setSize(300,300);
        frame.setVisible(true);
    }

    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();
        }
    }
}