Re: finalize(), System.runFinalization(), System.gc();

[James Perkins <jrperkinsjr@xxxxxxxxx>]

I should have noted too, this is from the Sun documentation. I'm sure the
IBM GC operates the same way though.
--
James R. Perkins


On Mon, Mar 9, 2009 at 13:02, James Perkins <jrperkinsjr@xxxxxxxxx> wrote:

> Read the documentation on Object.finalizer(), it's not guaranteed to run.
> http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#finalize()<http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#finalize%28%29>
>
> Also, System.gc() does not run the GC, it merely suggests to the JVM that
> it will run.
> http://java.sun.com/j2se/1.4.2/docs/api/java/lang/System.html#gc()<http://java.sun.com/j2se/1.4.2/docs/api/java/lang/System.html#gc%28%29>
>
> Keep in mind this will not clean up objects that still have references.
> It's possible to have arrays that have been decreased in size to still have
> references if not done properly. Also, check any listeners or timer jobs and
> make sure they are using WeakReference collections.
> --
> James R. Perkins
>
>
>
> On Mon, Mar 9, 2009 at 12:02, Lim Hock-Chai <Lim.Hock-Chai@xxxxxxxxxxxxxxx
> > wrote:
>
> > Is there a guideline on when should an application manually calls the
> > finalize(), System.runFinalization(), or System.gc()?  Or should
> > application never calls these methods and let the JVM mangement it on
> > its own?
> >
> > thanks
> > --
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