Re: static synchronized method
On Jul 27, 7:04 pm, Alice <quaxx1...@example.com> wrote:
On 27/07/2011 5:06 PM, lewbloch wrote:
The main concern, instead, is invariant violation when the design
expects a singleton of some sort: a single global registry of some sor=
a single global interning cache, a single INSTANCE reference to a sing=
singleton instance such as what java.awt.Toolkit.getDefaultToolkit()
returns, etc.; if there are suddenly two of a thing like that when the
design calls for exactly one, then problems can ensue, but problems th=
have nothing to do with concurrency and data races.
Classloaders define a sort of namespace wherein the "same" class from
two different classloaders is actually two different classes. Like s=
much in Java, this is a very powerful technique that can mess you up a
lot if you're careless or don't fully grasp the consequences.
Classloader magic is one of those "here there be dragons" regions of
Java. I've dabbled in it, but I am Dukas' Sorcerers Apprentice when
it comes to their use.
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