[jboss-user] [EJB3] - Re: EJB 3.1, CDI, JSF 2 ERROR java.lang.NullPointerException

[Phanor Coll]

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

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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..
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