new ThreadPoolExecutor

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Java ThreadPoolExecutor 线程池的使用介绍

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ThreadPoolExecutor是Java中的一个线程池实现类。可以使用不同的构造方法创建ThreadPoolExecutor实例。ThreadPoolExecutor具有几个参数来配置线程池的行为，例如核心线程数、最大线程数、等待队列等。当线程池中的线程数小于核心线程数时，新任务会直接创建一个核心线程来执行。当线程池中的线程数达到核心线程数，并且等待队列未满时，新任务会被放入等待队列中。当线程池中的线程数达到核心线程数，并且等待队列已满时，线程池会根据设置的拒绝策略来处理新任务。ThreadPoolExecutor提供了几种内置的拒绝策略实现类，例如AbortPolicy、CallerRunsPolicy和DiscardOldestPolicy。其中，AbortPolicy会直接抛出异常，表示线程池无法处理多余的任务；CallerRunsPolicy会让主线程来执行新任务；DiscardOldestPolicy会将等待队列的队头任务移除，然后将新任务加入线程池。通过使用不同的拒绝策略，可以根据实际需求来处理线程池中的任务。可以使用ThreadPoolExecutor的构造方法来自定义线程池的参数和拒绝策略，或者使用Java提供的Executors工具类来创建不同类型的线程池实例。123 #### 引用[.reference_title] - *1* *3* [java线程池ThreadPoolExecutor](https://blog.csdn.net/weixin_48288539/article/details/127061783)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"] - *2* [线程池ThreadPoolExecutor详解（整理详细）](https://blog.csdn.net/trusause/article/details/125747447)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"] [ .reference_list ]

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new ThreadPoolExecutor

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ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor( 3, 2, 5, TimeUnit.SECONDS, new ArrayBlockingQueue<>(5), Executors.defaultThreadFactory(), new ThreadPoolExecutor.AbortPolicy() ); threadPoolExecutor.submit(()-> System.out.println("adasd"));

ExecutorService threadPoolExecutor = new ThreadPoolExecutor( 3, 2, 5, TimeUnit.SECONDS, new ArrayBlockingQueue<>(5), Executors.defaultThreadFactory(), new ThreadPoolExecutor.AbortPolicy() ); threadPoolExecutor.submit(()-> System.out.println("dsa"));报错了

8核32G的配置怎么设置线程池比较合理ExecutorService newCacheThreadPool = new ThreadPoolExecutor( 10, 100, 3, TimeUnit.SECONDS, new LinkedBlockingDeque<>(1000), Executors.defaultThreadFactory(), new ThreadPoolExecutor.DiscardOldestPolicy() );

ThreadPoolExecutor threadPool = new ThreadPoolExecutor(Runtime.getRuntime().availableProcessors()*2+1,Runtime.getRuntime().availableProcessors()*2+1,60, TimeUnit.SECONDS,new LinkedBlockingQueue<>(1000), Executors.defaultThreadFactory(),new ThreadPoolExecutor.CallerRunsPolicy());

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ThreadPoolExecutor threadPool = new ThreadPoolExecutor(Runtime.getRuntime().availableProcessors()2+1,Runtime.getRuntime().availableProcessors()2+1,60, TimeUnit.SECONDS,new LinkedBlockingQueue<>(1000), Executors.defaultThreadFactory(),new ThreadPoolExecutor.CallerRunsPolicy());