concurrency

From: Peter Ashford (me_at_here.there.com)
Date: 09/29/04 

Date: Thu, 30 Sep 2004 09:48:11 +1200

Hi All,

I've heard that the concurrency features in 1.5 are more efficient than
using synchronized(). Has anyone done any benchmarks on this?

I've got a class that is accessed from two threads, I was using
synchronized(my_private_lock_object) to prevent out-of-synch access to
crucial data, and I changed that to Lock.lock() - I'm wondering if it
makes any (even if minimal) speed difference?

Does anyone know of any really good, in depth articles about the new
primitives?

TIA

Peter.