Java 2 Platform, Enterprise Edition (J2EE) Components

What Does Java 2 Platform, Enterprise Edition (J2EE) Components Mean?

Java 2 Platform, Enterprise Edition (J2EE) components are J2EE application parts installed on different client machines according to corresponding application tiers in the multitiered J2EE environment.


The four J2EE application components are: Client tier, Web tier, business tier and enterprise information system (EIS) tier.

Techopedia Explains Java 2 Platform, Enterprise Edition (J2EE) Components

A J2EE component is one of the self-contained functional units inside a J2EE application. It functions independently, bundled and/or when interacting with various J2EE components written in the Java language and executed like any other Java program. Combining respective classes and files facilitates communication between J2EE components in the same J2EE application.

Client tier components, such as application clients and applets, run on a client machine. Web and business tier components, such as Java servlets and Java server pages (JSP), run on a J2EE server. The EIS tier component runs on the EIS server.

J2EE component features are different from standard Java program features, as follows:

  • They are different parts that must be assembled into a J2EE application.
  • They should be compliant with J2EE specifications.
  • They are managed by the J2EE server after deployment.

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Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…