How to do connection pooling in core java without using external library

[Monica Shiralkar]

How to do connection pooling without using external library? I know that there are libraries like DNCB available but without using them how to do connection pooling?

thanks

[Paul Clapham]

Those connection pools are written in Java, you know. So that means that to do connection pooling in core Java without using an external library, you'd write a connection pool in Java, just like those other people did. I'm not sure why you would want to do that, though. It would be a lot of work for no apparent benefit.

[Vinod Vijay]

Absolutely.
Monica, why do you want to re-invent the wheel? Go for plain JDBC API for better performance if that is your concern and not interested in ORM

[Ulf Dittmer]

Go for plain JDBC API for better performance if that is your concern and not interested in ORM

If performance is indeed the driving concern, then using plain JDBC over ORM may help. Or it may not. Just as using connection pools may help, or they may not. Too much depends on the circumstances (about which we know nothing) to make blanket statements like this. More likely some performance tuning on the DB and DB server would make a bigger difference. But this is idle speculation, since we don't know that performance has anything to do the issue; my guess is it doesn't.