Hi, I'm a newbie to JSF/JBOSS/EJB3.0 I did the setup correctly and was able to load the jsp pages. I created a Session Bean,entity bean and two xhtml pages. When i try to enter the details and click submit button, i'm getting Instantiationexception when invoking the session bean. Can anybody help me out. SessionBean: @Stateless @Name("registerSessionBean") public class RegisterSessionBean implements Register{ @In private UsersImpl users; @In private EntityManager entityManager; @Logger private Log log; public String register() { List query = entityManager.createQuery("select username from User where username=#{user.username}").getResultList(); if (query.size()==0) { entityManager.persist(users); log.info("Registered new user #{users.username}"); return "/registered.xhtml"; } else { FacesMessages.instance().add("User #{users.username} already exists"); return null; } } } LoginUser.xhtml <!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:s="http://jboss.com/products/seam/taglib" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:rich="http://richfaces.org/rich" template="layout/template.xhtml" xmlns:a4j="http://richfaces.org/a4j"> <ui:define name="body"> <h:form> <h:messages globalOnly="true" styleClass="message"/> <rich:panel> <f:facet name="header">Welcome to the Create User Page</f:facet> <h:panelGrid columns="2" style="align:center" > <h:outputText value="#{message.firstName}" /> <h:panelGroup> <h:inputText id="firstName" value="#{users.firstName}" required="true"/> <h:message for="firstName" styleClass="message" /> </h:panelGroup> <h:outputText value="#{message.lastName}" /> <h:panelGroup> <h:inputText id="lastName" value="#{users.lastName}" required="true" /> <h:message for="lastName" styleClass="message" /> </h:panelGroup> <h:outputText value="#{message.userName}" /> <h:inputSecret id="userName" value="#{users.userName}" /> </h:panelGrid> <h:panelGroup> <h:commandButton action="#{registerSessionBean.register}" value="Login" /> <h:commandButton action="cancel" value="Cancel" immediate="true" /> </h:panelGroup> </rich:panel> </h:form> </ui:define> </ui:composition> Components.xml <?xml version="1.0" encoding="UTF-8"?> <components xmlns="http://jboss.com/products/seam/components" xmlns:core="http://jboss.com/products/seam/core" xmlns:persistence="http://jboss.com/products/seam/persistence" xmlns:drools="http://jboss.com/products/seam/drools" xmlns:bpm="http://jboss.com/products/seam/bpm" xmlns:security="http://jboss.com/products/seam/security" xmlns:mail="http://jboss.com/products/seam/mail" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation= "http://jboss.com/products/seam/core http://jboss.com/products/seam/core-2.0.xsd http://jboss.com/products/seam/persistence http://jboss.com/products/seam/persistence-2.0.xsd http://jboss.com/products/seam/drools http://jboss.com/products/seam/drools-2.0.xsd http://jboss.com/products/seam/bpm http://jboss.com/products/seam/bpm-2.0.xsd http://jboss.com/products/seam/security http://jboss.com/products/seam/security-2.0.xsd http://jboss.com/products/seam/mail http://jboss.com/products/seam/mail-2.0.xsd http://jboss.com/products/seam/components http://jboss.com/products/seam/components-2.0.xsd"> <core:init jndi-pattern="ear-1.0-SNAPSHOT/#{ejbName}/local"/> <core:manager concurrent-request-timeout="500" conversation-timeout="10000" conversation-id-parameter="cid" parent-conversation-id-parameter="pid"/> <persistence:managed-persistence-context name="entityManager" auto-create="true" persistence-unit-jndi-name="java:/arplabEntityManagerFactory"/> Persistence.xml <?xml version="1.0" encoding="UTF-8"?> <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0"> <persistence-unit name="arplab"> org.hibernate.ejb.HibernatePersistence <!-- MySQL Local --> <jta-data-source>java:/arpLabMySQLLocalDatasource</jta-data-source> </persistence-unit> View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4210614#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...