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Groups > comp.lang.java.programmer > #15734

Re: Closing/Despose of JFrame

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Lew <lewbloch@gmail.com> wrote:
> Dying old:
> public class Example
> {
>  Collection<Foo> foos = getSomeFoos();
>  Bar bar; // the elephant in the room
>  public void run()
>  {
>   for (Foo foo : foos)
>   {
>    bar = foo.obtainBar();
>     // do whatever with 'bar'
>     // 'bar' does not fall out of scope
>     // The last reference from the loop lasts as 
>     // long as this instance does, and could 
>     // tenure the 'Bar' it points to
>   }
>  }
> }
> [...]
> There are some notable urban 
> legends out there, such as the advice to set all references 
> to 'null' when finished with them. There are specific times 
> to do so, such as when a collection such as a 'Stack' is 
> holding hidden references ("packratting", or the Java version 
> of a memory leak). [...]

...or right after the loop in above "dying old"-Example, if for
whatever reason there really was some need to have "bar" as a
field, instead of as a local var within the loop.

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Thread

Closing/Despose of JFrame Jesper Johnsen <jsjohnsen.dk@gmail.com> - 2012-06-28 06:38 -0700
  Re: Closing/Despose of JFrame markspace <-@.> - 2012-06-28 07:22 -0700
    Re: Closing/Despose of JFrame Lew <lewbloch@gmail.com> - 2012-06-28 09:47 -0700
      Re: Closing/Despose of JFrame Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2012-06-28 23:31 +0000
        Re: Closing/Despose of JFrame Lew <lewbloch@gmail.com> - 2012-06-28 17:42 -0700
      Re: Closing/Despose of JFrame Gene Wirchenko <genew@ocis.net> - 2012-06-28 19:55 -0700
        Re: Closing/Despose of JFrame Lew <lewbloch@gmail.com> - 2012-06-29 10:19 -0700
          Re: Closing/Despose of JFrame Gene Wirchenko <genew@ocis.net> - 2012-06-29 13:24 -0700
            Re: Closing/Despose of JFrame Lew <lewbloch@gmail.com> - 2012-06-29 13:36 -0700
      Re: Closing/Despose of JFrame Roedy Green <see_website@mindprod.com.invalid> - 2012-06-29 05:31 -0700
  Re: Closing/Despose of JFrame Lew <lewbloch@gmail.com> - 2012-06-28 12:46 -0700
  Re: Closing/Despose of JFrame "John B. Matthews" <nospam@nospam.invalid> - 2012-06-28 22:32 -0400

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