Here come another question : what is the difference between J2EE and EJB ?.
J2EE stands for Java 2 Platform, Enterprise Edition until the name was changed to Java Platform, Enterprise Edition or Java EE in version as for EJB it means Enterprise Java Beans. EJB and J2EE are both specifications for a server, however EJB is a part of J2EE. For a server to run an EJB application , that server must include an EJB container. An EJB container is a program that provide a run-time necessary for running enterprise components.
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