Does Postgresql 7.2.1 support connection pooling?

I can't get connection pooling to work with Postgresql 7.2.1. I don't
see anywhere in the 7.2 documentation on postgresql.org which talks
about connection pooling but it has it in the 7.3 documentation.

I get an error when trying to connect to a datasource:
java.lang.ClassCastException: org.apache.commons.dbcp.BasicDataSource

Thanks for any help,

Tim :-)