DelayQueue in Java is an implementation of BlockingQueue interface and is part of java.util.concurrent package. DelayQueue in Java is an unbounded queue that’s where it differs from ArrayBlockingQueue which is a bounded queue. Delayed interface Java DelayQueue can store elements only of type Delayed. There is an interface Delayed in…
SynchronousQueue in Java is an implementation of BlockingQueue interface and is part of java.util.concurrent package. SynchronousQueue in Java is different from other BlockingQueue implementations like ArrayBlockingQueue and PriorityBlockingQueue because a synchronous queue does not have any internal capacity, not even a capacity of one. So, each insert operation in SynchronousQueue…
The traditional way of acquiring a mutual exclusion lock in Java is to use synchronized keyword but Java 5 added new lock implementations like ReentrantLock and ReentrantReadWriteLock which provide extended locking operations capabilities. In this post we’ll see the difference between synchronized and ReentrantLock in Java. ReentrantLock Vs synchronized in…
In this post we’ll see the usage of java.util.concurrent.locks.ReadWriteLock interface and its implementing class ReentrantReadWriteLock in Java with examples. Table of contents ReadWriteLock in Java Concurrency Benefits of ReadWriteLock ReentrantReadWriteLock in Java Concurrency Java ReentrantReadWriteLock constructors ReentrantReadWriteLock example in Java ReentrantReadWriteLock Properties ReadWriteLock in Java Concurrency ReadWriteLock as the name…
ReentrantLock in Java is part of java.util.concurrent.locks package with in the Java concurrency API added in Java 5 which also has other classes like ConcurrentHashMap, CountDownLatch. ReentrantLock class in Java implements java.util.concurrent.locks.Lock interface and provide many locking operations. Table of contents ReentrantLock in Java Concurrency Why call it a ReentrantLock…
Both CountDownLatch and CyclicBarrier are synchronization aids in Java concurrency that facilitate communication among threads. Both of these synchronization aids create a latch or a barrier to make threads wait until a condition is satisfied and then only the threads can make further progress. In this post we’ll see the…
Many synchronization aid were added as the part of java.util.concurrent package in Java 5 like Semaphore, Exchanger. One more synchronization aid added as part of Java concurrency is Phaser which was added in Java 7. Table of contents Phaser in Java concurrency Java Phaser constructors How Phaser works in Java…
Many synchronization aid were added as the part of java.util.concurrent package in Java 5 like CyclicBarrier, Semaphore. One more synchronization aid added as part of Java concurrency is Exchanger. In this post we’ll see what is Exchanger in Java, how does it work and an example of Exchanger. Exchanger in…
Semaphore is a synchronization aid that can be used for inter-communication among threads or to restrict access to resource. An implementation of Semaphore in Java is available for out of box use and it is part of java.util.concurrent package. Table of contents Counting semaphore Java semaphore constructors Semaphore example in…
ArrayList is part of Java from version 1.2 where as CopyOnWriteArrayList was added in Java 5 as a thread-safe variant of ArrayList. In this post we’ll see the differences between ArrayList and CopyOnWriteArrayList in Java. CopyOnWriteArrayList Vs ArrayList in Java 1- Thread Safety: CopyOnWriteArrayList is thread safe. Thread safety in…
