Why do I get an OutOfMemoryError when inserting 50,000 objects into HashMap?

Question

I am trying to insert about 50,000 objects (and therefore 50,000 keys) into a java.util.HashMap. However, I keep getting an OutOfMemo

Answer 1

Implicit in these answers it that Java has a fixed size for memory and doesn't grow beyond the configured maximum heap size. This is unlike, say, C, where it's constrained only by the machine on which it's being run.