Object Pooling in Java

Question

What are the pro\'s and con\'s of maintaining a pool of frequently used objects and grab one from the pool instead of creating a new one. Something like string interning exc

Answer 1

Don't.

This is 2001 thinking. The only object "pool" that is still worth anything now a days is a singleton. I use singletons only to reduce the object creation for purposes of profiling (so I can see more clearly what is impacting the code).

Anything else you are just fragmenting memory for no good purpose.

Go ahead and run a profile on creating a 1,000,000 objects. It is insignificant.

Old article here.