multithreading - wait, notify in java ExecutorService if future work not define previously? -

multithreading - wait, notify in java ExecutorService if future work not define previously? -

how apply wait, notify java executorservice after declaring thread pool

class="lang-java prettyprint-override">executorservice es = executors.newfixedthreadpool(10);

the future work no define previously

java multithreading threadpool executorservice