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The Java Platform, Enterprise Edition or Java EE (formerly known as Java 2 Platform, Enterprise Edition or J2EE) has undergone several changes since Java J2EE-1.0 as well as numerous additions of new specifications.
- Java EE 5 platform, more defaults are available, with a special emphasis on making them meaningful. Java Developers now have fewer details to remember.
- The EJB software programming model is significantly simpler in Java EE 5 platform.
- The new Java Persistence API is available to all Java API platform applications, including those based on Java EJB technology