Java threads use --ThreadPoolExecutor

Original: Reprinted indicate the original address https://www.cnblogs.com/fanerwei222/p/11871132.html

Java threads use --ThreadPoolExecutor

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());
        }
    }

/ ** 
 * task execution thread pool 
 * / 
class ThreadPoolExecutorTask the implements the Runnable { 

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

Print results are as follows:

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

Then it can be seen, exceeds the maximum size of the thread pool settings, an exception will be reported!

But it does introduce other parameters.