Web Application Development. Get to know Java EE 5. Introduction A look at the history of the Java Platform, Enterprise Edition (Java EE) specification reveals that each major revision has been driven by a major theme.
For example, with the first release of J2EE™ 1.2 came the initial bundling of separate specifications, and later, in J2EE 1.4, the focus was on Web services. Figure 1 shows a historical summary of Java EE, listing important features from each version, along with some key external influences that has helped shape it. The Java Persistence API - A Simpler Programming Model for Entity Persistence.
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