Re: checking garbade collector

From:
 Owen Jacobson <angrybaldguy@gmail.com>
Newsgroups:
comp.lang.java.programmer
Date:
Mon, 05 Nov 2007 09:17:07 -0800
Message-ID:
<1194283027.766038.23040@e34g2000pro.googlegroups.com>
On Nov 5, 7:18 am, stef <stef.pellegr...@gmail.com> wrote:

Hello...

With that kind of function :

  public static Date testDate(String StrDate)
  {
    SimpleDateFormat fmt;

    f = new SimpleDateFormat("MM/dd/yyyy");
    f.setLenient(false);

    try
    {
      return fmt.parse(StrDate);
    }
    catch(ParseException e)
    {
      return null;
    }
  }

I suppose fmt will be destroyed by the garbage collector when I will
get out of the function.
But, Do you know a method to "see" when the garbage do this ?

Overall, do you know How can I just really see what's free and what is
not ?
May be with finalize, but not very cool...

Thanks...


If you need to monitor the garbage collector at an object by object
level, use a heap profiler. I use YourKit, which allows me to compare
snapshots to show only the new (or only the retained) objects between
multiple generations; other people like jmp/tijmp.

If you only need to monitor specific objects, use one of the
Reference<T> subclasses and a reference queue to monitor when those
objects get collected.

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