Java Thread Local Usage

    private ThreadLocal tl = new ThreadLocal(){

        protected synchronized Session initialValue() {

            return sessionForBatchLoading;

        }    

    };

    

    private Session sessionForBatchLoading = null;

    private void initializeSession () throws Exception {

        session = SessionFactory.getSession ();

        sessionForBatchLoading = factory.getSession ();

        tl.set(sessionForBatchLoading);

    }

    private void getOrder (int orderId) throws Exception {

        Session tlSession = tl.get ();

        tlSession.getItemFromDBWithId (orderId);

    }

*Session is not thread safe .

    private void startThreads (int threadCount) throws Exception {
        ExecutorService executor = Executors.newFixedThreadPool(threadCount);

        for (int i = 0; i < threadCount; i++) {
            FetchTask task =  new FetchTask ();
            executor.submit (task);
        }

         executor.shutdown ();

    }