practice threads

i wonder where i can find questions on thread so that i can practice the concepts i learned.
i am not desiring real questions, please excuse if you post a real question.
I have studied RHE and Mughal,
i did not give any question on join or rather very less practice on synchronization and wait(), notify().

Have you seen Threads and Synchronization ??
You will find some food for thought there!!

Ajith

...and this new question is very useful in light of new exam...