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Saturday, 13 September 2014

Two Ways of Accessing Enterprise Beans -JEE 7

Two ways to get an enterprise bean's Instance:

Clients of an enterprise beans obtains a reference to an instance of an enterprise bean through 

  • Dependency Injection
  • JNDI lookup
Dependency Injection- Java Annotations

Supported for Clients running in a J2EE server managed environment, JavaServer faces web applications, JAX-RS web services,other enterprise beans or J2EE application clients.

Dependency injection using javax.ejb.EJB 

JNDI- Java Naming and Directory Interface

Applications running out of J2EE server such as J2SE application can get an instance for the enterprise bean through a explicit JNDI lookup.

JNDI supports a global syntax for all J2EE Components to perform explicit lookup.

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