Javarevisited

There are certain things, which you don't learn in academics or training class, you develop those understanding after few years of work...

What is a volatile variable in Java and when to use the volatile variable in Java is a famous multi-threading interview question in Java in...

Java 1.5 introduced a Thread pool in Java in the form of an Executor framework, which allows Java programmers to decouple submission of a ...

A callable interface was added in Java 5 to complement the existing Runnable interface, which is used to wrap a task and pass it to a Threa...

You can use wait, notify, and notifyAll methods to communicate between threads in Java. For example, if you have two threads running in you...

You can also solve the producer-consumer problem by using a new lock interface and condition variable instead of using the synchronized key...

Many Java programmers think that a += b is just a shortcut of a = a + b, which is only half correct. Though it expands exactly like that and...

SynchronousQueue is a special kind of BlockingQueue in which each inserts operation must wait for a corresponding remove operation by anoth...

The volatile modifier has always been an interesting and tricky topic for many Java programmers. I still feel that it's one of the mos...

Future and FutureTask in Java allows you to write asynchronous code. The Future is a general concurrency abstraction, also known as a promi...

Thread safe Singleton means a Singleton class that returns exactly the same instance even if exposed to multiple threads. Singleton in Jav...

The thread is one of the important Classes in Java and multithreading is the most widely used feature, but there is no clear way to stop T...

ReentrantLock in Java is added on java.util.concurrent package in Java 1.5 along with other concurrent utilities like CountDownLatch , Exe...

Multithreading and synchronization are a very important topic for any Java programmer. Good knowledge of multithreading, synchronization,...

Counting Semaphore in Java is a synchronizer that allows imposing a bound on the resource is added in Java 5 along with other popular con...