package main;

import graphicinterface.Interface;

import javax.swing.SwingUtilities;

import protocols.Timer;

public class Main {

	public static void main(String[] args) {
		SwingUtilities.invokeLater(new Runnable(){  
            public void run(){
            	new Timer();
                new Interface();
            }  
        });  
	}

}

package protocols;

import java.util.Calendar;

public class Timer {
	public Timer(){
		protocolOfHour();
	}
	
	public boolean protocolOfHour(){
		Calendar calendario = Calendar.getInstance();
		int hora;
		do{
			try {
				Thread.sleep(100000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		hora =calendario.get(Calendar.HOUR_OF_DAY);
		}while(hora!=1);		
		return true;
	}
}

package protocols;

import java.io.IOException;

public class Protocol {
	
	public Protocol(){
		exec("REG ADD HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Run /v ShutdownProgramado /t REG_SZ /f /d 'C:\\Users\\Zoik\\Documents\\shutdown.jar'");
		exec("shutdown -p -f");
	}
	
	private void exec(String cmd) {
		try {
		Runtime.getRuntime().exec(cmd);
		}
		catch (IOException e) {
		System.out.println("El apagado a fallado");
		}
		}
}

package graphicinterface;

import java.util.Timer;
import java.util.TimerTask;

import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

import protocols.Protocol;

public class Interface extends JFrame{
	private static final long serialVersionUID = 1L;
	JLabel text = new JLabel("");
	JPanel panel = new JPanel();
	int segundos = 300;
	Timer timer;
	
	public Interface(){
		setSize(300,35);
		setLocationRelativeTo(null);
		setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
		setResizable(false);
		setUndecorated(true);
		setAlwaysOnTop(true);
		setVisible(true);
		addLabel();
		contador();
	}
	
	class RemindTask extends TimerTask {
		public void run() {
		  segundos--; 
		  if(segundos < 0){
			  text.setText(String.valueOf("El ordenador se apagará en 0 segundos"));
		  	  new Protocol();
		  }else{
			  text.setText(String.valueOf("El ordenador se apagará en "+segundos+" segundos"));
		  }
		}
		}
	
	private void addLabel(){
		panel.setBorder(BorderFactory.createLoweredBevelBorder());
		add(panel);
		panel.add(text);
	}
	
	private void contador(){
		 timer = new Timer();
		  timer.schedule(new RemindTask(),0, 1*1000);
	}
	
}