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Java crash before filling heap space

I have this java simulator that will need to process a huge amount of data. It works fine, but I go up to the array int[100000][100][2]along with other large arrays. the program says its lack of memory. ( Java.lang.outOfMemoryError)

Everything is fine and good, I just give it more memory, but it seems that it always ends at about 300 M, although I assume it is 2 GB. This is all from viewing the task manager.

Is there something wrong with my system, or is it just a Java thing that I need to deal with?

@DanielPryden

OS: Win 7 32Bit 4 GB of RAM on board

JVM Team: java -Xmx2048M -Xms2048M Simulator

Error data: I had to get from the IDE (using IntelliJ). I do not know how to do this from cmd. I guess this is what you are looking for.

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
    at Simulator.main(Simulator.java:63)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
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EDIT : I can't play it on my inbox (Mac OS X, 8Gb RAM). Given that a single array occupies approximately 200 MB + in memory, I agree with brettw that it does not have a contiguous block of memory of this size causing this problem (not the generation size). As for the fix, use the collection along with regular arrays or buy more memory (recommended :-))

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