SCJP toughest topic - Threads and Concurrency

I have read recently that there are a lot of thread questions on the Threads and Concurrency in the Java 5 SCJP exam. Not only are there are lot of thread questions but they are also some of the most difficult. I haven't yet taken the exam yet and am still revising for the Java SCJP. So I suppose I won't know until I do it. I think with the no the topic of threads it is a big subject and in particular the code can be very tricky to read through and decide if there is going to be a dead lock.

Another reason why threads is tricky is because the code can look quite simple but yet could still be problems with it.

After reading a number of comments from people who have taken the SCJP Java 5 exam and seeing that they found threads the trickiest questions, I have decided to look for some more information on threads. So you are studying for the Java exam, check out these resources.

I posted a link to a thread chapter http://hoskinator.blogspot.com/2006/05/threads-some-resources-on-threads-and.html

concurrency podcast - he current podcast from the Software Engineering Radio is about concurrency and Threads

http://hoskinator.blogspot.com/2006/04/concurrency-podcast.html

Here are three very good articles on threads

Doug Lees book article
http://gee.cs.oswego.edu/dl/cpj/mechanics.html

java Net article
Java.net http://today.java.net/pub/a/today/2004/08/02/sync1.html

The Thread lifecycle from Sun
http://java.sun.com/docs/books/tutorial/essential/threads/lifecycle.html