Packages 
Package Description
org.apache.commons.dbcp
Database Connection Pool API.
org.apache.commons.dbcp.cpdsadapter
This package contains one public class which is a ConnectionPoolDataSource (CPDS) implementation that can be used to adapt older Driver based jdbc implementations.
org.apache.commons.dbcp.datasources
This package contains two DataSources: PerUserPoolDataSource and SharedPoolDataSource which provide a database connection pool.
org.apache.commons.dbcp.managed
This package provides support for pooling of ManagedConnections.
org.apache.commons.jocl
Java Object Configuration Language, an XML application for describing Java Objects to be instantiated.