Adding abilites to Java's ThreadPoolExecutor

I had a discussion on Java's ThreadPoolExecuter, which seem not to have the ability to block producer from adding tasks when the thread pool's queue is full. I went through some possible solutions and I'm gonna write something about it, so please stay tuned (and if you have something to tip on this issue, say it now).

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Happy to update:
I've published it, in java.net, it is called Creating a NotifyingBlockingThreadPoolExecuter.