Posted in Java

Callback method example in Java

Here I am showing a simple example on what is callback method in Java. A callback is a piece of code that you can pass as an argument to be executed on some other code. Since Java doesn’t yet support function pointer, the callback methods are implemented as command objects. A callback will usually hold reference to some state to…

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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 is called cyclic because it can be re-used after the waiting threads are released. A CyclicBarrier supports an…

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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 before it starts processing. How does CountDownLatch work? A CountDownLatch is initialized with a given count. The await…

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Callable and Future in Java

Here I am going to give you an example on Callable and Future in Java. public interface Callable<V> 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 potentially executed by another…

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