One example that has provided me benefit multiple times is a simple Java application that I can run against a String I’m considering as a regular expression token to be used with String.split.

This used to work fine. I'm using eclipse and it's NOT telling me there is a problem with using these methods. I can even compile fine with ant but whenever I actually run the code I get a java ...

Whenever a new string variable or object is created, it is stored in computer memory. Memory is split into two high-level blocks, the stack and the heap. Java stores object values in heap memory; ...