Isn't CountDownLatch [0] the same thing in Java? [0]: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/CountDownLatch.html https://docs.oracle.co

Isn't CountDownLatch [0] the same thing in Java? [0]: https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/CountDownLatch.html https://docs.oracle.com/javase/7/docs/api/java/util/concurre...