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Is it a good way to use java.util.concurrent.FutureTask?

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清歌不尽
清歌不尽 2020-12-22 20:18

First of all, I must say that I am quite new to the API java.util.concurrent, so maybe what I am doing is completely wrong.

What do I want to do?

I have a Ja

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  • 慢半拍i
    慢半拍i (楼主)
    2020-12-22 20:45

    Yuval's solution is fine. As an alternative you can also do this:

    ExecutorService executor = Executors.newFixedThreadPool();
FutureTask futureOne = new FutureTask(myFirstProcess);
FutureTask futureTwo = new FutureTask(mySecondProcess);
executor.execute(futureOne);
executor.execute(futureTwo);
executor.shutdown();
try {
  executor.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);
} catch (InterruptedException e) {
  // interrupted
}



    What is the advantage of this approach?  There's not a lot of difference really except that this way you stop the executor accepting any more tasks (you can do that the other way too).  I tend to prefer this idiom to that one though.
    


    Also, if either get() throws an exception you may end up in a part of your code that assumes both tasks are done, which might be bad.
    
    
    
             
    
                                                        
    
            
            
    
              
                
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