Why is UncaughtExceptionHandler not called by ExecutorService?

Question

I\'ve stumbled upon a problem, that can be summarized as follows:

When I create the thread manually (i.e. by instantiating java.lang.Thread) the U

Answer 1

There is a little bit of a workaround. In your run method, you can catch every exception, and later on do something like this (ex: in a finally block)

Thread.getDefaultUncaughtExceptionHandler().uncaughtException(Thread.currentThread(), ex);
//or, same effect:
Thread.currentThread().getUncaughtExceptionHandler().uncaughtException(Thread.currentThread(), ex);

This will "ensure a firing" of the current exception as thrown to your uncoughtExceptionHandler (or to the defualt uncought exception handler). You can always rethrow catched exceptions for pool worker.