Daniel Keep wrote: > immutable means "no one can modify this." > > const means "someone might be able to modify this, but not you can't."
So?
Basically, what the OP said, is that we need readers-writer locks
[1]. A const synchronized method would use the read lock (and
therefore several threads can access the same object through *const*
synchronized methods simultaneously), but a non const synchronized
method would use the read-write lock (which would prevent anyone
else from accessing the same object through a synchronized method,
be it const or not).
Jerome
[1] http://en.wikipedia.org/wiki/Readers-writer_lock
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