Packages 
Package Description
javax.jdo
This package contains the JDO specification interfaces and classes.
javax.jdo.annotations  
javax.jdo.datastore
This package contains the JDO specification datastore interfaces.
javax.jdo.identity
This package contains the JDO specification identity interfaces and classes.
javax.jdo.listener
This package contains the JDO specification listener interfaces and classes.
javax.jdo.spi
This package contains the interfaces and classes used by JDO implementations.