创建自定义线程池, 并在执行完将线程回收的两种方式

Posted 2022-11-28 Peter-OK

private int final DOWNLOAD_THREAD_SIZE=5;
...

// 创建自定义线程池, 并在执行完将线程回收, 方式一
ThreadPoolExecutor executor = new ThreadPoolExecutor(DOWNLOAD_THREAD_SIZE,
             DOWNLOAD_THREAD_SIZE + 1, 1, TimeUnit.SECONDS, new LinkedBlockingQueue());
// 在allowCoreThreadTimeOut设置为true时，ThreadPoolExecutor的keepAliveTime参数必须大于0
executor.allowCoreThreadTimeOut(true);
executor.execute(new DownloadTaskThread(id, "downloadTaskThread-" + i));



// 创建自定义线程池, 并在执行完将线程回收, 方式二
ThreadPoolExecutor executor = new ThreadPoolExecutor(DOWNLOAD_THREAD_SIZE,
             DOWNLOAD_THREAD_SIZE + 1, 1, TimeUnit.SECONDS, new LinkedBlockingQueue());
executor.execute(new DownloadTaskThread(id, "downloadTaskThread-" + i));
// 在任务执行完后，调用shutdown方法，将线程池中的空闲线程回收。该方法会使得keepAliveTime参数失效。
executor.shutdown();