Java线程--ThreadPoolExecutor使用

原创：转载需注明原创地址 https://www.cnblogs.com/fanerwei222/p/11871132.html

Java线程--ThreadPoolExecutor使用

public static void main(String[] args) {
        ExecutorService service = new ThreadPoolExecutor(1, 2, 1000, TimeUnit.MILLISECONDS, new SynchronousQueue<Runnable>(),Executors.defaultThreadFactory(),new ThreadPoolExecutor.AbortPolicy());
        for(int i=0 ; i<3 ; i++) {
            service.execute(new ThreadPoolExecutorTask());
        }
    }

/**
 * 线程池执行器任务
 */
class ThreadPoolExecutorTask implements Runnable{

    @Override
    public void run() {
        System.out.println(Thread.currentThread().getName());
    }
}

打印结果如下:

Exception in thread "main" java.util.concurrent.RejectedExecutionException: Task concurrent.ThreadPoolExecutorTask@6d6f6e28 rejected from java.util.concurrent.ThreadPoolExecutor@135fbaa4[Running, pool size = 2, active threads = 2, queued tasks = 0, completed tasks = 0]
    at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2063)
    at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:830)
    at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1379)
    at concurrent.MainConcurrent.main(MainConcurrent.java:37)
pool-1-thread-1
pool-1-thread-2

可以看出, 超出最大的线程池设置大小之后, 就会报异常!

其他参数不过多做介绍.