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Asked: 2026-06-17T11:33:34+00:00

I’m experimenting with loading classes at run-time and I’m curious, is it possible for

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I’m experimenting with loading classes at run-time and I’m curious, is it possible for @EJB annotated properties to be injected when classes are loaded in this manner? The class is being loaded from a servlet using the servlet’s classloader (ChangeAwareClassLoader).

That is, if I load a class defined as

public class Foo {
  @EJB
  Bar bar;
}

in the servlet as follows

ClassLoader cLoader = this.getClass().getClassLoader();
c = cLoader.loadClass("Foo");

I would like for the EJB Bar to be injected.

Thanks.

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1 Answer

  1. Editorial Team

    EJB’s can only be injected with @EJB into “managed” classes. In Java EE, this basically means only into EJBs (Stateless and Stateful EJBs, Message Beans, etc.) and Servlets/Filters.

    Anything else (POJOs, JPA entities, etc.) will not have the resources injected, and you’ll have to use the lookup mechanism to get access to them.

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