To create a Java™ program that is functionally perfect yet runs
horribly slow is to create a Java program that… runs horribly slow.
Borland® Optimizeit™ Suite provides developers with a complete
solution for managing application performance, including
minimizing excessive temporary object use.
In light of today’s compressed development cycles, multi-tiered
architectures, and complex technologies, many organizations are
challenged to get stable enterprise applications out the door in a
timely manner. Devoting a small amount of energy throughout the
development process to address and correct performance obstacles
dramatically lowers the risks and costs associated with poorly
performing applications over the life of the code.

Download Link

http://www.borland.com/resources/en/pdf/white_papers/opt_temporary_object_usage.pdf