8/27 Is there any object ID built into java? In Ruby and Python
there's a method on every object, getObjectID() that returns a
unique ID for any object. Is there anything like that iN java?
\_ Object.hashCode() in general will return a unique value, although
that is not contractually guaranteed. You could get two different
objects wiht the same hashcode, but Object.equals() should return
false in this case. There is no perfect ironclad method that I
know of. If you tell me what you're trying to do maybe I can
suggest an alternative.
\_ What I'm doing is a bit complex to explain on the motd, but
basically, I need a simple (int, long, float, or string)
unique identifier for each object. I ended up writing a
static class with an incrementing long.
\_ You *did* make it thread-safe, I hope.
\_ No threads, although I guess it might be a good idea
anyway. Although it's certainly not the only thing in
this code that's hideously un-thread-safe. |
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