Need help with wait() and notify()

[Mkaveli]

public class ThreadPool {

static ExecutorService pool;
static LinkedList<Runnable> list = new LinkedList<Runnable>();
static ThreadWorker threadWorker = new ThreadWorker();
static Thread worker = new Thread(threadWorker);

ThreadPool(){
pool = Executors.newSingleThreadExecutor();
pool.execute(worker);
}

ThreadPool(int size){
pool = Executors.newFixedThreadPool(size);
pool.execute(worker);
}

synchronized void add(Runnable task){
list.add(task);
notifyAll();
}

void stopPool(){
pool.shutdown();
}
}

class ThreadWorker implements Runnable{

public synchronized void run(){
while(true){
if(ThreadPool.list.size() == 0){
try {
System.out.println("Worker is waiting!!");
this.wait();
} catch (InterruptedException e) {
System.out.println(e);
}
}
else{
ThreadPool.list.poll().run();
}
}
}
}

It seems that the notifyAll() doesn't activate de wait() in the ThreadWorker class. I was wondering what i am doing wrong. thank you

[Fubarable]

Please don't bump your post with a link in two other threads or multipost a question.

[dgaur]

The wait and notify methods works on the same object only.

In your case you are calling these two methods on different object, which is of no use.

Try making a shared Object somewhere in your code and then call these two methods on that object only. It should work.