There are many different platforms available for developing modern multi-tier applications. One of the leading platforms is Java Platform, Enterprise Edition (Java EE), which was renamed during the writing of the thesis and will be known as Jakarta Enterprise Edition (Jakarta EE). The application server performs most functionalities of multi-tier applications. There are many application servers for the Java EE platform on the market, one of the most commonly used is WebSphere application server (WAS).
In this thesis we first introduce Java and Java EE. Then we describe multi-tier applications and their implementation with Java EE platform. After this, we look closely at the novelties of the last two versions of Java EE and the Java EE profiles. Finally, we describe application servers and WAS.
The thesis is based on a review of the literature and documentation of Java EE, with an emphasis on its last two versions. The result of the thesis is a summary and analysis of the latest two versions of Java EE and an overview and analysis of Java EE application servers.
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