Hi,
I'm going to tell you what I know about memory distribution, perhaps this one gives you an idea where to search more information.
There are two kinds of memory even three.
The first one is the Heap, where JVM creates objects as you know.
The second one is the stack, where JVM keeps the method's call and local variables.
The third is the
String pool that Java uses to stock the immutable String objects.
I don't think that the heap is used for other purposes that creating objects (assigning memory to them).
You can try to find more information in the Java specification. You can download this specification in the sun's site.
I hope this could help you a little.
JackBorton