Concurrent Programming in Java, 2nd Edition surveys a wide field of research in parallelism and concurrency and shows how to do more with multithreading in Java with dozens of patterns and design tips. (All concurrency classes and interfaces discussed in this section are in the java.util.concurrent package. This reference will take you through simple and practical approaches while learning Java Concurrency framework provided by Java … Main Components . Concurrency in java : Concurrency refers to the parallel processing. In this article, we will do an overview of the whole package. )CompletionStage represents a stage or step in a possibly asynchronous computation. Since version 5.0, the Java platform has also included high-level concurrency APIs to ease the complex semantics of working with and understanding Threading behaviors. For this reason, the Concurrency API was introduced back in 2004 with the release of Java 5 and has been enhanced with every new Java release. Java 8 adds the CompletableFuture class, which implements the new CompletionStage interface and extends Future. Java 5 added a new Java package to the Java platform, the java.util.concurrent package. The Java platform is designed from the ground up to support concurrent programming, with basic concurrency support in the Java programming language and the Java class libraries. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. It is the ability to execute more than one programs or more than one parts of the program in parallel without affecting the final outcome. Prerequisites: ConcurrentMap The ConcurrentHashMap class is introduced in JDK 1.5 belongs to java.util.concurrent package, which implements ConcurrentMap as well as Serializable interface also.ConcurrentHashMap is an enhancement of HashMap as we know that while dealing with Threads in our application HashMap is not a good choice because performance-wise HashMap is not … 2. The API is located in the package java.util.concurrent. This tutorial will discuss components of java.util.concurrent package like Java Semaphore, Executor Framework, ExecutorService to implement Concurrency in Java: From our previous Java tutorials, we know that the Java platform supports concurrent programming from the ground up. The Java Concurrency Framework comprises of a collection of thread-safe and robust services that enable you to develop applications that can leverage the advantages of concurrent programming. The java.util.concurrent package provides tools for creating concurrent applications. The java.util.concurrent contains way too many features to discuss in a single write-up. Java Concurrency API defines three executor interfaces that cover everything that is needed for creating and managing threads: Executor: launch a task specified by a Runnable object. A Computer Science portal for geeks. Java runs on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX. This tutorial gives a complete understanding of Java. Written for the advanced Java developer, this book offers a comprehensive tour of leading-edge thinking about parallel coding processes. This package contains a set of classes that makes it easier to develop concurrent (multithreaded) applications in Java. This article, we will do an overview of the whole package Java platform, the java.util.concurrent way... Written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions discuss. 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