InterruptedException handling

"Kenneth P. Turvey" <>
04 Sep 2009 05:29:49 GMT
I used to do a lot of programming in C (still do sometimes) and when a
call was made to sleep there were a number of reasons that it might
return early that had little to do with the program being written. It
was typical to wrap these calls in a loop so that the program would sleep
for the correct amount of time. So when I first moved to Java I would
typically do the same thing with an InterruptedException, catching it and
looping back to the wait or the sleep or whatever had caused the

I think this was a mistake. In Java it seems that the only reason a
thread would be interrupted is do to a direct call to Thread.interrupt
(). So it seems that the best way to handle this exception if it is
unexpected is to let it bubble up through the code like one usually

Of course if the code is designed to do something with an
InterruptedException, handling it makes sense, but should it simply be
ignored in code that doesn't expect this to happen? This line of
reasoning also extends to similar exceptions like the BrokenBarrier
exception and others.

Is there any reason to handle InterruptedExceptions as a special case?


Kenneth P. Turvey <>

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