How to wait for a ThreadPoolExecutor to finish

Question

My Question: How to execute a bunch of threaded objects on a ThreadPoolExecutor and wait for them all to finish before moving on?

I\'m new to Thread

Answer 1

Try this,

ThreadPoolExecutor ex =
    new ThreadPoolExecutor(limit, limit, 20, TimeUnit.SECONDS, q);
for (int i = 0; i < limit; i++) {
  ex.execute(new RunnableObject(i + 1));
}

Lines to be added

ex.shutdown();
ex.awaitTermination(timeout, unit)