java thread pool(phrasebook

* Runnable.java -- the tasks/jobs lined up are objects implementing Runnable.java. It's counter intuitive to me that the threads in the pool by definition implement Runnable.java, and the jobs also implement Runnable.java -- see blog post [[ wrapper object of "me" as a field in me ]]

* queues -- i think thread pools need a FIFO queue to hold the jobs/tasks. Usually it's a blocking queue.