Untitled

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

public class GraphicalInterface implements ActionListener {
    JFrame jf = new JFrame();
    JLabel welcomeText = new JLabel();
    JLabel username = new JLabel();
    JTextArea UNI = new JTextArea();
    JLabel pass = new JLabel();
    JTextArea PI = new JTextArea();
    JButton login = new JButton();
    JLabel show = new JLabel();

    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == login) {
            if (UNI.getText().equals("abcd") && PI.getText().equals(("123"))) {
                System.out.println("Successful");
                show.setText("Successful");
            }
            else {
                System.out.println("Try again");
                show.setText("Try again");
            }
        }
    }

    public GraphicalInterface() {
        welcomeText.setBounds(140, 5, 100, 50);
        username.setBounds(50, 50, 100, 50);
        UNI.setBounds(200, 50, 100, 50);
        pass.setBounds(50, 150, 100, 50);
        PI.setBounds(200, 150, 100, 50);
        login.setBounds(120, 250, 100, 50);
        show.setBounds(135, 350, 100, 50);

        jf.add(welcomeText);
        jf.add(username);
        jf.add(UNI);
        jf.add(pass);
        jf.add(PI);
        jf.add(login);
        jf.add(show);

        welcomeText.setText("WELCOME!");
        username.setText("Username");
        pass.setText("Password");
        login.setText("Login");

        login.addActionListener(this);

        jf.setLocation(50, 50);
        jf.setSize(365,480);
        jf.setLayout(null);
        jf.setVisible(true);
    }

    public static void main(String[] args) {
        new GraphicalInterface();
    }
}