package dk.itu.oop.lecture10;

class Exercise34{
	public static void main(String args[]) {
		SomeRessource ressource = new SomeRessource();
		ResultObject res = ressource.getSomething();
		//try{ Thread.sleep(1200);}catch(Exception e){};
		System.out.println("weee...");
		System.out.println(res.result());
	}
}

abstract class ResultObject implements Runnable{
	Object result;
	ResultObject(){
		new Thread(this).start();
	}

	final public synchronized void run(){
		result = computeResult();
		try{Thread.sleep(1000); }catch(Exception e){};
		notifyAll();
	}

	final public synchronized Object result(){
		while ( result == null) try{wait();}catch(Exception e){};
		return result;
	}

	protected abstract Object computeResult();
}

class SomeResult extends ResultObject{
	protected Object computeResult(){ return "Got it";}
}

class SomeRessource {
	ResultObject getSomething(){ return new SomeResult();}
}