Java Persistence API Java J2EE Database New J2EE 5 capabilities empower Java Class designers with the ability to easily persist instances into relational data-stores. Even plain-old Java objects (POJOs) can be defined as persistent "Entities", dramatically reducing the amount of database-related coding effort. This class prepares experienced Java programmers to utilize the Persistence capabilities provided with J2EE 5. 1-2 Days Java programmers seeking to utilize the J2EE 5 Persistence API.