Re: java.lang.OutofMemoryError

• To: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>
• Subject: Re: java.lang.OutofMemoryError
• From: "Nash'at Ahmad" <nashat@xxxxxxxxxxxxxxxxxxxxxx>
• Date: Thu, 9 Nov 2000 11:20:08 -0500 (EST)

Thanks Bill. I had another question regarding openmap. Has anyone
used openmap with visad. Or if VisAD can read a map database such 
as DCW and display it.


Thanks,

Nash'at


On Wed, 8 Nov 2000, Bill Hibbard wrote:

> Hi Nash'at,
> 
> > I ran it using java -mx256m and I was able to do a lot of re-displays
> > before I got that error again. I have a question though- I thought that
> > Java does automatic memory management. Once I clear the display, it should
> > release all the memory, but it seems that somethings are kept causing
> > the application to crash at a later time. Can you give some insight
> > on this?
> 
> I just took a quick look at your code.  I think the problem
> may be that you always construct a 'new TerrainView()' in
> the actionPerformed() method of OmegaWindowManager.  The
> new TerrainView() constructs all sorts of objects with Threads
> and connections to AWT and Java3D that do not go away just
> because you replace your own reference 'terrView' in the
> next call to actionPerformed().  I suggest creating some
> methods for TerrainView so that you can re-use it for new
> data, and only construct 'new TerrainView()' once.
> 
> Good luck,
> Bill
> ----------------------------------------------------------
> Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI  53706
> hibbard@xxxxxxxxxxxxxxxxx  608-263-4427  fax: 608-263-6738
> http://www.ssec.wisc.edu/~billh/vis.html
>