Thread pool implementation using our BlockingQueue created earlier

ThreadPool.java

//we are using our own definition of BlockingQueue as created by us in BlockingQueue.java file
public class ThreadPool {
    private BlockingQueue<Runnable> taskQueue = null;
    private List<PoolThread> threads = new ArrayList<PoolThread>();
    private boolean isStopped = false;

    public ThreadPool(int noOfThreads, int maxNoOfTasks) {
        taskQueue = new BlockingQueue<Runnable>(maxNoOfTasks);
        for(int i=0; i<noOfThreads; i++) {
            threads.add(new PoolThread(taskQueue));
        }
        for(PoolThread thread: threads) {
            thread.start();
        }
    }

    /*
     * to execute task this method is called ThreadPool.execute(Runnable r) with a runnable implementation as parameter
     * this runnable is en-queued(added) in the blocking queue, waiting to be de-queued
     */
    public synchronized void execute(Runnable task) throws Exception {
        if(this.isStopped) throw new IllegalStateException("Thread Pool is stopped");
        this.taskQueue.add(task);
    }

    public synchronized void stop() {
        this.isStopped = true;
        for(PoolThread thread: threads) {
            thread.doStop();
        }
    }
}

class PoolThread extends Thread {
    private BlockingQueue taskQueue = null;
    private boolean isStopped = false;

    public PoolThread(BlockingQueue queue) {
        taskQueue = queue;
    }

    public void run() {
        /*
         * after execution, PoolThread loops and tries to de-queue a task again, until it is stopped
         */
        while(!isStopped()) {
            try {
                Runnable runnable = taskQueue.remove();
                runnable.run();
            } catch (Exception e) {
                // log it here
            }
        }
    }

    public synchronized void doStop() {
        isStopped = true;
        this.interrupt(); // break thread out of remove call
    }

    public synchronized boolean isStopped() {
        return isStopped;
    }

}