How to increase the Java Heap Space for a main method

Hello all,
after a given number of calculations inside a class with main-method, I get an OutOfMemoryError (Java Heap Size).
So I'm just trying to increase the Heap Size Creator uses, but it won't work.
After reading a lot of posts and online-articles, I tried the following:
1) I changed the -Xms and -Xmx options (to 512m) both in
$CREATOR/SunAppServer8/domains/creator/config/domain.xml and
$CREATOR/etc/creator.conf (this file also points to the Creator built-in JDK)
2) additionally I tried to start Creator from the console with the respective option:
./creator -J-Xmx512m
The memory toolbar shows the right value, but when I use
System.out.println("JVM maximum memory:\t"+Runtime.getRuntime().maxMemory()/1024+" KB\n");it always says 64 MB, no matter which option I chose in the config-files.
So how can I increase this value?
Regards,
Felix
Message was edited by:
Felice
Message was edited by:
Felice

Thank you very much,
this was an important hint. Additionally I had to create a new "Java Class Library" project with a copy of the needed files (those that are not dependent on the Application Server). Then I could use the option you mentioned.
Unfortunately, when I try to run the file with
java -jar FILENAME.jarit won't work, because the archive is not complete: MANIFEST.MF lacks the main-class and all involved libraries.
I managed to add the main-class attribute manually, but adding all library references seems to be very error-prone.
So does anyone know if I did something wrong or if this is a bug of Creator?
Regards,
Felix

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