Top "Ejb" questions

EJB explanation regarding EAR vs WAR

I have just begun reading up on EJBs. Even as I venture into it I have a few questions based …

java eclipse ejb war ear

EJB: Avoid Transaction rollback

When a (transactional) method of an EJB calls another (transactional) method of another EJB, and an exception is thrown in …

jakarta-ee transactions ejb ejb-3.0

Call method in EJB on JBoss startup

I'm looking for an entry point in an EJB deployed on JBoss. Servlets have the load-on-startup tag to use in …

java jboss jakarta-ee ejb lifecycle

Can I (and how) lookup CDI managed beans using javax.naming.Context#lookup in EJB module?

Can I (and if so, how?) lookup CDI managed beans using javax.naming.Context#lookup in EJB module? I'm using …

java glassfish ejb cdi ejb-3.1

Fetch Logged In Username in a webapp secured with Keycloak

I have secured an enterprise application with Keycloak using standard wildfly based Keycloak adapters. Issue that I am facing is …

java jboss ejb keycloak

JavaEE6 DAO: Should it be @Stateless or @ApplicationScoped?

I'm currently creating an EJB3 Data Access Class to handle all database operations in my Java EE 6-application. Now, since …

java jakarta-ee ejb java-ee-6 ejb-3.1

.NET - vs EJB

What is the comparable technology of EJB (Enterprise Java Beans) in .net?

java .net ejb

NullPointerException when injecting EJB in Java Class

I think this problem raises because I didn't get something with EJBs. I have a service class for my entity, …

java jsf ejb

Where to find an EJB3 tutorial?

I want to learn EJB3. Anyone could suggest some good tutorial website for it?

ejb

Difference between javax.inject.Singleton and javax.ejb.Singleton

im little confused. What is the exact difference between javax.inject.Singleton and javax.ejb.Singleton?

java singleton ejb java-ee-7 inject