Phanor Coll [https://community.jboss.org/people/pcoll] created the discussion "Re: EJB 3.1, CDI, JSF 2 ERROR java.lang.NullPointerException" To view the discussion, visit: https://community.jboss.org/message/724454#724454 -------------------------------------------------------------- it worked whe using @EJB instead of @Inject thanks, now I have another newbee question.. If the programming rule is that every stateless,stafull bean has to have at least one business interface, why doesnt this code works? *@ManagedBean(name="message")* public class index {     @EJB     MyBean bean;     public String getMensaje(){         return "Netbeans + JbossAS 7.1 do rock! " + bean.hola();     } } *@Stateless* public class MyBean implements MybeanInterface {     public String hola(){         return "it's true!";     } } public interface MybeanInterface {     String hola(); } Instead of injecting the SLSB like before I have to use JNDI, It worked like this: *@ManagedBean(name="message")* public class index { public String getMensaje(){         InitialContext context;         try {             context = new InitialContext();             m = (MybeanInterface) context.lookup("java:global/practicaejb/MyBean!practica.interfaces.MybeanInterface");         } catch (NamingException e) {             // TODO Auto-generated catch block             e.printStackTrace();         }         return "Netbeans + JbossAS 7.1 do rock! " + m.hola(); } whats the difference?.. and sorry for this question, this is probably EJB 101, but like I said before, this is a newbe question.. -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/724454#724454] Start a new discussion in EJB3 at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Phanor Coll [https://community.jboss.org/people/pcoll] created the discussion "Re: EJB 3.1, CDI, JSF 2 ERROR java.lang.NullPointerException" To view the discussion, visit: https://community.jboss.org/message/724473#724473 -------------------------------------------------------------- thanks for the answer, I'm using JbossAS 7.1, it comes with EJB 3.1 support..  do you recommend the use of business interfaces? -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/724473#724473] Start a new discussion in EJB3 at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]