J2EE Architecture - A Review

Java 2 Platform Enterprise Edition J2EE is a set of specifications for developing enterprise-level applications created by the JCP Java Community Process. In simple terms it provides a standard for developing multitier enterprise applications. Advancements in technology further enhanced the need for scalable efficient and faster solutions for information management. The JEE technology is best suited when it comes to meeting these requirements. J2EE architecture has various layers working in unison. These include the client presentation business logic and data access layer. The client tier acts as the interaction point between the client and the application. The presentation layer is where an interface is generated dynamically using different components. These components may include Servlets and JavaServer Pages JSPs or standalone Java applications. The middle tier is also called as the server tier. Enterprise beans and Web Services encapsulate distributable reusable business logic for the application in the next tier which also happens to be known as the server tier. The forth tier handles connections with the respective databases