game: Java Edition

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowListener;

import javax.swing.*;

@SuppressWarnings("serial")
abstract class game extends JFrame implements WindowListener, ActionListener {
private static int i = 0;


public static void main(String args[]){
JFrame frame = new JFrame("game");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setBounds(0, 0, 400, 300);
frame.setVisible(true);
frame.setLayout(null);

JProgressBar progressBar = new JProgressBar(0,100);
progressBar.setBounds(50, 50, frame.getWidth() - 100, 30);
progressBar.setVisible(true);
frame.add(progressBar);

JButton button = new JButton("Press");
button.setBounds(150, 100, 100, 100);
button.setVisible(true);
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
progressBar.setValue(i++);
}
});
frame.add(button);
}
}