Best site on collections and threads: http://gee.cs.oswego.edu/dl/classes/collections/ by Doug Lea!!!! .V
David Graham wrote:
Maybe I'm displaying gross ignorance here but AFAIK a synchronized block grabs the object's monitor and blocks other threads from calling *synchronized* methods on that object, right? Unsynchronized methods on that object can be called at will.
I'm looking at LookupDispatchAction for PR #16019 and it has some strange synchronized blocks. It synchronizes on HashMap objects which contain no synchronized methods. Can anyone explain this to me?
I believe the Maps should be defined as Collections.synchronizedMap(new HashMap()); This alleviates the need for one of the synchronized blocks but the other is still needed because it Iterates over the key Set.
Thanks,
Dave
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