ThreadPoolExecutor示例

public class Test {

    public static void main(String args[]){
        ThreadPoolExecutor executor = new ThreadPoolExecutor(5, 10, 200, TimeUnit.MILLISECONDS,
                new ArrayBlockingQueue<Runnable>(5));

        for(int i=0;i<15;i++){
            MyTask myTask = new MyTask(i);
            executor.execute(myTask);
            System.out.println("线程池中线程数目："+executor.getPoolSize()+"，队列中等待执行的任务数目："+
                    executor.getQueue().size()+"，已执行玩别的任务数目："+executor.getCompletedTaskCount());
        }
        executor.shutdown();
    }
}

class MyTask implements Runnable {
    private int taskNum;

    public MyTask(int num) {
        this.taskNum = num;
    }

    @Override
    public void run() {
        System.out.println("正在执行task "+taskNum);
        try {
            Thread.currentThread().sleep(4000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("task "+taskNum+"执行完毕");
    }
}

最后

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