How to find my EJBs?

i want to get the EJB in my servlet：
the EJB is：ejb.archive.ArchiveManager
i have configratured reference name:ejb/archive/archivemanager
in SUN FORTE .
Hashtable env = new java.util.Hashtable(1);
//initialiate context
try {
initContext = new javax.naming.InitialContext();
catch (Exception e) {
System.out.println("Exception creating InitialContext: " + e.toString());
return;
//lookup ArchiveManager
try {
System.out.println("Looking up ArchiveManager bean home interface");
String JNDIName = "java:comp/env/ejb/archive/archivemanager";
System.out.println("Looking up: " + JNDIName);
Object obj = initContext.lookup(JNDIName);
armHome = (ArchiveManagerHome) javax.rmi.PortableRemoteObject.narrow(obj,ArchiveManagerHome.class);
catch(Exception e) {
System.out.println("ArchiveManager bean home not found - " +
"Is bean registered with JNDI?: " + e.toString());
e.printStackTrace();
return;
//create ArchiveManager
try {
System.out.println("Creating the ArchiveManager bean");
arm = armHome.create();
catch(CreateException e) {
System.out.println("Could not create the ArchiveManager bean: "+
e.toString());
return;
in runtime the error is:
javax.ejb.EJBException: nested exception is: javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
javax.ejb.CreateException: Could not create stateless EJB: java.lang.reflect.InvocationTargetException
at com.sun.ejb.containers.StatelessSessionContainer.createStatelessEJB(StatelessSessionContainer.java:358)
at com.sun.ejb.containers.StatelessSessionContainer.getContext(StatelessSessionContainer.java:285)
why?how can i get my EJB?
thanks

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