out of memoey!! how to release a BufferedImage

[chien-rong chen]

Hey,
I successfully load a extremely large jpeg file, say 3000 x 2000, into BufferedImage.
When I try to load, same size, second jpeg file, out of memory message is shown.
Does anyone of you know how to release this BufferedImage so that I can load the second jpg file?
Or any other way to load the second jpg file?

Thanks,

chienrong chen

[Joe Ess]

invoke flush() on your BufferedImage instance.

[chien-rong chen]

Thank you very much for replying.

I tried this way, but it doesn't work.

Can you explain more clearly? For example, where or when to put this method?

chienrong chen

[Sudarshan Muramreddy]

If you are using the same buffer then you need to flush it out, just before you read the next one.

Regards,
Sudarshan

[Joe Ess]

There isn't much to explain.

BufferedImage bi;
/* code that creates and uses a BufferedImage instance */
bi.flush();
/* code that creates and uses another BufferedImage */
bi.flush()
/* and so on . . . */

Since you are dealing with such large images it may help to make the initial memory pool larger by passing the argument -Xms to the virtual machine:

-Xmsn = Specify the initial size, in bytes, of the memory allocation pool. This value must be a multiple of 1024 greater than 1MB. Append the letter k or K to indicate kilobytes, or m or M to indicate megabytes. The default value is 2MB. Examples:
-Xms6291456
-Xms6144k
-Xms6m

from the SDK tool documentation. Keep in mind that this will not cure a memory leak, just hide it for a while. You can use Runtime.freeMemory() and Runtime.totalMemory() to monitor memory usage.