ComputerJy, need your expert help on threads please

[Pouncer]

public class Test {
    public static void main(String[] args) {
	GamePlayer game = new GamePlayer();
	
	System.out.println(game.doSomeMove());
    }
}

class GamePlayer {
    int doSomeMove() {
	// Cause some timeout on purpose.. 7 seconds!
	Long stoptime = 7000L; 
	
	try {
	    Thread.sleep(stoptime);
	} catch (InterruptedException e) {
	    e.printStackTrace();
	}

	return 5;
    }
}

class ThreadTesting implements Runnable {
    public void start() {
    }
    
    public void stop() {
    }
    
    public void run() {
	try {
	}
	
	catch (Exception e) {
	}
    }
}

I'm not too sure on how to do this.

as you see i deliberately make the doSomeMove() return the int after 7 seconds. i want to somehow run the doSomeMove() method in a thread and check it for timeout issues. If the method takes more than 5 seconds to respond, i want to stop the thread and print "player move took too long to repsond" otherwise i return the move (the int) as normal. can anyone help me with this

[ComputerJy]

public class Test
{
	static Integer returnedValue;

	public static void main(String[] args)
	{
		final Thread workingThread = new Thread(new Runnable()
		{
			@Override
			public void run()
			{
				try
				{
					Thread.sleep(7000);
					returnedValue = 5;
				}
				catch (InterruptedException e)
				{
				}
			}
		});
		final Thread checkingThread = new Thread(new Runnable()
		{
			@Override
			public void run()
			{
				try
				{
					Thread.sleep(5000);
					if (workingThread.isAlive() || returnedValue == null)
					{
						System.err.println("Timed out");
					}
				}
				catch (InterruptedException e)
				{
				}
			}
		});
		workingThread.start();
		checkingThread.start();
	}
}

[Pouncer]

hey ComputerJy that is perfect and works good! but is there a way to have the working thread as a seperate class which returns 5?

[ComputerJy]

No you can't, because a thread does not return any values

[Pouncer]

I played around with this a bit, and got this done - its working fine

public class Test {
    
    public static void main(String[] args) throws InterruptedException {

	ThreadTesting tt = new ThreadTesting();
	Thread t = new Thread(tt);
   
        long patience = 2000;
	long startTime = System.currentTimeMillis();

	t.start();

	
	while (t.isAlive()) {

	    // Keep checking if threads time goes over 'patience'  seconds..
	    if (((System.currentTimeMillis() - startTime) > patience) && t.isAlive()) {
		System.out.println("timeout......");
		t.stop();
		break;
	    }

	    
	    if (tt.getValue() != null) {
		System.out.println("Got a return value: " + tt.getValue());
		t.stop();
		break;
	    }
	}
	
    }
}

class GamePlayer {
    int doSomeMove() {
	// Cause some timeout on purpose.. 7 seconds!
	try {
	    Thread.sleep(7000);
	} 
	catch (InterruptedException e) { }
	
	
	return 5;
    }
}

class ThreadTesting implements Runnable {
    Integer returnedValue;
   

    public void start() {
    }
    
    public void stop() {
    }
    
    public void run() {
	try {
	    GamePlayer gp = new GamePlayer();
	    
	    returnedValue = gp.doSomeMove();
	}
       
	catch (Exception e) {
	}
    }
	
    public Integer getValue() {
	return returnedValue;
    }
}

but what i need to do now is also print the time it took to return a value from doSomeMove() (if there wasnt a timeout..) any ideas mate?

[ComputerJy]

import java.util.Date;

class GamePlayer
{
	int doSomeMove()
	{
		// Cause some timeout on purpose.. 7 seconds!
		try
		{
			Thread.sleep(7000);
		}
		catch (final InterruptedException e)
		{
		}

		return 5;
	}
}

public class Test
{

	@SuppressWarnings("deprecation")
	public static void main(final String[] args) throws InterruptedException
	{

		final ThreadTesting tt = new ThreadTesting();
		final Thread t = new Thread(tt);

		final long patience = 2000;
		final long startTime = System.currentTimeMillis();

		t.start();

		while (t.isAlive())
		{

			// Keep checking if threads time goes over 'patience' seconds..
			if (((System.currentTimeMillis() - startTime) > patience) && t.isAlive())
			{
				System.out.println("timeout......");
				t.stop();
				break;
			}

			if (tt.getValue() != null)
			{
				System.out.println("Got a return value: " + tt.getValue());
				t.stop();
				break;
			}
		}

	}
}

class ThreadTesting implements Runnable
{
	Integer returnedValue;

	public Integer getValue()
	{
		return returnedValue;
	}

	public void run()
	{
		try
		{
			final GamePlayer gp = new GamePlayer();

			Date d1 = new Date();
			returnedValue = gp.doSomeMove();
			Date d2 = new Date();
			long val = d2.getTime() - d1.getTime();
			System.out.println("Operation took " + val + " Milliseconds to complete");
		}

		catch (final Exception e)
		{
		}
	}

	public void start()
	{
	}

	public void stop()
	{
	}
}