Introduction to Jakarta Concurrency Framework in Java Class Library

Jakarta Concurrency (that is, Jakarta concurrent) is a framework for the Java platform to simplify multi -threaded programming and concurrent control.It is an important part of the Java class library that enables developers to write more efficient and scalable concurrent applications. The concurrent control in Java is a complex task that requires developers to understand the concepts such as threads, locks and synchronization.Jakarta Concurrency simplifies these tasks by providing a set of easy -to -use and powerful tools and classes. Jakarta Concurrency provides the following main functions: 1. Thread pool management: You can create and manage the thread pool through the ThreadPoolexecutor class.The thread pool is a set of reusable threads that can reduce the creation and destruction of threads and improve the performance of the application. The following is an example code of using a thread pool: ExecutorService executor = Executors.newFixedThreadPool(5); executor.submit(new MyTask()); In the above code, we created a thread pool with a size of 5 and submitted a MyTask task.The thread pool will be responsible for performing this task without the need to create and start the thread manually. 2. Synchronous tools: Jakarta Concurrency provides a variety of synchronous tools, such as Countdownlatch, Semaphore, etc., for synchronization and coordination between multiple threads. Below is an example code using countdownlatch: CountDownLatch latch = new CountDownLatch(3); // During the execution, multiple threads call latch.countdown () to reduce the count of latch latch.countDown(); // In the main thread, obstruct it by calling latch.await () until the count of latch is 0 to 0 latch.await(); In the above code, we created a countdownlaatch object with a value of 3.During the execution, multiple threads reduce counting by calling the countdown () method.The main thread is waiting for the count by calling the AWAIT () method. 3. Atomic variables: Jakarta Concurrency provides some atomic variables, such as Atomicinteger, Atomiclong, etc., to support lock -free programming and thread security operations. Below is an example code using AtomicInteger: AtomicInteger counter = new AtomicInteger(0); counter.incrementAndGet(); In the above code, we created an AtomicInteger object and increased its value by calling the Incrementandget () method.This operation is safe thread and does not require additional synchronization mechanism. In short, Jakarta Concurrency is an important framework in the Java class library that is used to simplify multi -threaded programming and concurrent control.It provides functions such as thread pool management, synchronization tools and atomic variables to help developers write high -efficiency and scalable concurrent applications.By using Jakarta Concurrency, developers can easily handle concurrent programming challenges to improve the performance and stability of the application.