Calling an EJB 3.1 from an Application-Client

Hello,
I'm currently learning to use the GlassFish3-Features with help of the book "Beginning Java EE 6 Platform with GlassFish 3: From Novice to Professional (Expert's Voice in Java Technology)" from Antonio Goncalves. He says that i should use the following code to get the connection to an EJB:
            EJBContainer ec = EJBContainer.createEJBContainer();
            Context ctx = ec.getContext();
            MyBean ejbInstance = (MyBean) ctx.lookup("java:global/ejb");This does not work because I get a couple of Exceptions telling me that some classes are not serializable. This happens in the "EJBContainer.createEJBContainer() call. The classes wich are mentioned are:
org.glassfish.javaee.services.ConnectorDescriptorProxy
org.glassfish.javaee.services.ResourceProxy
com.sun.enterprise.container.common.impl.util.InjectionManagerImpl
and the application ends after this call.
If I use instead the following code:
{code} Context ctx = new InitialContext();
MyBeanInterface ejbInstance = (MyBeanInterface) ctx.lookup("java:global/ejb");
{code}
it works.
I use GlassFish 3.1 because there is a general bug in V3 for App-client calling an EJB, NetBeans 6.8 and SDK 6_20.
Can anybody shed any light why the first version is not running?
Appending the stack-trace didn't worked out. It was to big.
Thanks and best regards,
Willi

it doesn't work because the lookup call does NOT return an instance of MyBean - it returns a proxy object that implements all the methods of its common interface. Hence you program against the business interface, not the implementation bean. Using this way also, you do not need to have the implementation of MyBean in your client's classpath, only the interface.

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/* Copyright 2004 Sun Microsystems, Inc. All rights reserved. */
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<?xml version="1.0" encoding="UTF-8"?>

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