public class MissedNotify2
{
	public static void main(String argv[])
	{	
		LockObj lo = new LockObj();
		Thread ts = new Thread(new Sleeper("sleep",lo,Integer.parseInt(argv[0])));
		ts.start();
		new Thread(new Sleeper("wakeUp",lo,Integer.parseInt(argv[1]))).start();
		
		try
		{
			Thread.sleep(2500);
		} //try
		catch (InterruptedException ie)
		{
			System.out.println("An InterruptedException caught\n"+ie.getMessage());
			ie.printStackTrace();
			System.exit(1);
		} //catch()
		
		ts.interrupt();
	} //main() 
} //class MissedNotify2

class Sleeper implements Runnable
{
	LockObj lo;
	int time;
	
	String command;
	public Sleeper(String command, LockObj lo, int time)
	{
		this.command = command;
		this.lo = lo;
		this.time = time;
	} //constructor
	
	public void run()
	{
		if( command.compareTo("sleep") == 0 )
			goToSleep();
		else
			wakeUp();
	} //run()
	
	public  void goToSleep()
	{
		try
		{
			Thread.sleep(time);
		} //try
		catch (InterruptedException ie)
		{
			System.out.println("An InterruptedException caught\n"+ie.getMessage());
			ie.printStackTrace();
			System.exit(1);
		} //catch()

		synchronized(lo)
		{
			System.out.println("sleeping 'til notification ..."+lo.sleeping);
			try
			{
				while (lo.sleeping == true)
				{
					lo.sleeping = true;
					lo.wait();
				}
			} //try
			catch (InterruptedException ie)
			{
				System.out.println("An InterruptedException caught\n"+ie.getMessage());
				ie.printStackTrace();
				System.exit(1);
			} //catch()		
			System.out.println("notified and awaked");
		} //synchronize
	} //goToSleep()
	
	public  void wakeUp()
	{
		synchronized(lo)
		{
			try
			{
				Thread.sleep(time);
			} //try
			catch (InterruptedException ie)
			{
				System.out.println("An InterruptedException caught\n"+ie.getMessage());
				ie.printStackTrace();
				System.exit(1);
			} //catch()

			System.out.println("Trying to awake ...");
			lo.sleeping = false;
			lo.notify();
		} //synchronize
	} //wakeUp()	
} //class Sleeper

class LockObj
{ 
	public boolean sleeping;
} //class LockObj