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

I agree with Jon Skeet's points, if you don't have a specific reason to create a pool of objects, I wouldn't bother.

There are some situations when a pool is really helpful/necessary though. If you have a resource that is expensive to create, but can be reused (such as a database connection), it might make sense to use a pool. Also, in the case of database connections, a pool is useful for preventing your apps from opening too many concurrent connections to the database.