Java CyclicBarrier

A synchronization aid that allows a set of threads to all wait for each other to reach a common barrier point. CyclicBarriers are useful in programs involving a fixed sized party of threads that must occasionally wait for each other. The barrier…

Java CountDownLatch

What is CountDownLatch? A synchronization aid that allows one or more threads to wait until a set of operations being performed in other threads completes, i.e., a kind of synchronization tool that allows one Thread  to wait for one or more Threads…

Callable and Future in Java

public interface Callable<V> http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/Callable.html A task that returns a result and may throw an exception. Implementors define a single method with no arguments called call. The Callable interface is similar to Runnable, in that both are designed for classes whose instances are…