Java Robot Example - Program to keep your computer away from Idle mode

import java.awt.AWTException;
import java.awt.Robot;
import java.awt.event.KeyEvent;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;

/**
 * This program will keep your computer alive i.e. it does not let computer go in Idle mode.
 * Default wake up time = 1 min
 */
public class KeepAliveRobot{
 
    private static boolean pause = true;
    private static final int DEFAULT_SLEEP_TIME = 60000; // 60000 miliseconds = 1 min
 
    public static void main(String[] args)
                 throws AWTException,IOException {

        Robot robot = new Robot();
        Properties p = new Properties();
        int sleepTime = DEFAULT_SLEEP_TIME;
        try {
            p.load(new FileInputStream("live.properties"));
            sleepTime = Integer.parseInt(p.getProperty("wakeup.time"));
           
          } catch (Exception e) {
            e.printStackTrace();
        }
          while (pause) {
            try {
                Thread.sleep(sleepTime);
            } catch (InterruptedException e1) {
                break;
            }
               
            robot.keyPress(KeyEvent.VK_ALT);
            robot.keyPress(KeyEvent.VK_TAB);
            robot.keyRelease(KeyEvent.VK_TAB);
            robot.keyRelease(KeyEvent.VK_ALT);         
             
        }   
    }
}