package loginapp;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.*;
import javax.swing.JButton;
import javax.swing.JFrame;

public class Login_App extends JFrame {

    public static void main(String[] args) {


JFrame frame = new JFrame("Mo Garage Login");
        //frame setup
        frame.setSize(500, 600);
        frame.setVisible(true);

        //Label and Text boxes

        JLabel usernamelbl = new JLabel("Username");
        usernamelbl.setBounds(100,100, 100,20);
        frame.add(usernamelbl);
        frame.setLayout(null);
        frame.setVisible(true);


        JLabel passwordlbl = new JLabel("Password");
        passwordlbl.setBounds(100,200,100,20);
        frame.add(passwordlbl);
        frame.setLayout(null);
        frame.setVisible(true);



        JTextField username = new JTextField();
        username.setBounds(200,100,100,20);
        frame.add(username);
        frame.setLayout(null);//using no layout managers
        frame.setVisible(true);



        JPasswordField pass = new JPasswordField();
        pass.setBounds(200,200,100,20);
        frame.add(pass);
        frame.setLayout(null);
        frame.setVisible(true);



        //Buttons

        JButton log=new JButton("Login");
        log.setBounds(200,500,100,40);

        frame.add(log);
        frame.setLayout(null);//using no layout managers
        frame.setVisible(true);
        //login button action
        log.addActionListener(new ActionListener() {
        public void actionPerformed (ActionEvent arg0) {

            String uname=username.getText();
            String passwd=pass.getText();

            if (uname.equals("") && passwd.equals(""))
            {
                JOptionPane.showMessageDialog(frame, "Login Successfull");

                MainMenu mainmenu =new MainMenu();

                mainmenu.setVisible(true);

                frame.setVisible(false);

            }
            else {
                JOptionPane.showMessageDialog(frame, "Incorrect Credentials");
            }


        }
        }
    );

        JButton clear=new JButton("Clear");
        clear.setBounds(50,500,100,40);

        frame.add(clear);
        frame.setLayout(null);
        frame.setVisible(true);
        //clear button action

        clear.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent arg0) {

                username.setText("");
                pass.setText("");

            }
        }
        );

    }


}

package loginapp;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;


public class MainMenu extends JFrame {

    public static void main(String[] args) {
    JFrame frame= new JFrame("Main Menu");
    frame.setSize(500,600);
    frame.setVisible(true);

    JButton client= new JButton("Add new Client");
    client.setBounds(200,100,120,30);
    frame.add(client);
    frame.setLayout(null);
    frame.setVisible(true);

    JButton Mod= new JButton("Update Database");
    Mod.setBounds(190,200,140,30);
    frame.add(Mod);
    frame.setLayout(null);
    frame.setVisible(true);

    JButton info= new JButton("Information");
    info.setBounds(200,300,120,30);
    frame.add(info);
    frame.setLayout(null);
    frame.setVisible(true);

    JButton exit= new JButton("Quit");
    exit.setBounds(200,400,120,30);
    frame.add(exit);
    frame.setLayout(null);
    frame.setVisible(true);
}
}