Re: How to search for leaks
John B. Matthews wrote:
In article <gkolat$gij$1@nntp.motzarella.org>,
Mark Space <markspace@sbcglobal.net> wrote:
Lew wrote:
Mark Space wrote:
I thought most Swing components had a finalize() method to prevent this,
but I don't see it. So add your own finalize() for child classes, or
don't forget to call dispose(). Either way, a yucky state of affairs,
as the programmer has to add the clean-up manually.
Good advice, except for the part about using 'finalize()'.
Avoid 'finalize()' except for cleanup of native memory that is outside
the ken of GC. This basically only comes up in JNI code. Otherwise,
'finalize()' is evil.
Isn't that what dispose() does, clean up memory allocated by the
(native) windowing system? I thought that's the memory that Knute was
talking about when he said his app would leak memory and blow up after
two and one half weeks.
In both Graphics and JDialog, finalize() calls dispose(). If you don't
call dispose() explicitly, the finalize() method should do it for you.
IIUC, you may run out of memory in the interim. I've seen it described
as more of a clog than a leak.
I would try to avoid relying on finalizer if possible.
Arne
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