I am trying to implement hellow world bean example in EJB 3.0 on Jboss and getting following error while running the client .

javax.naming.NamingException: Could not dereference object [Root exception is java.lang.reflect.UndeclaredThrowableException]
at org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1504)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:822)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:686)
at javax.naming.InitialContext.lookup(InitialContext.java:351)
at com.ejb3.client.HelloClient.doLookup(HelloClient.java:40)
at com.ejb3.client.HelloClient.main(HelloClient.java:24)
Caused by: java.lang.reflect.UndeclaredThrowableException
at $Proxy0.createProxyBusiness(Unknown Source)
at org.jboss.ejb3.proxy.impl.objectfactory.session.SessionProxyObjectFactory.createProxy(SessionProxyObjectFactory.java:129)
at org.jboss.ejb3.proxy.impl.objectfactory.session.stateless.StatelessSessionProxyObjectFactory.getProxy(StatelessSessionProxyObjectFactory.java:79)
at org.jboss.ejb3.proxy.impl.objectfactory.ProxyObjectFactory.getObjectInstance(ProxyObjectFactory.java:158)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
at org.jnp.interfaces.NamingContext.getObjectInstance(NamingContext.java:1479)
at org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1496)
... 5 more
Caused by: java.lang.ClassNotFoundException: com.test.business.HelloBusiness
at org.jboss.remoting.serialization.ClassLoaderUtility.loadClass(ClassLoaderUtility.java:103)
at org.jboss.remoting.loading.RemotingClassLoader.loadClass(RemotingClassLoader.java:86)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at org.jboss.remoting.loading.ObjectInputStreamWithClassLoader.resolveProxyClass(ObjectInputStreamWithClassLoader.java:253)
at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1500)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1463)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1699)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
at org.jboss.aop.joinpoint.InvocationResponse.readExternal(InvocationResponse.java:119)
at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1756)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1717)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1910)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1834)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
at org.jboss.remoting.serialization.impl.java.JavaSerializationManager.receiveObjectVersion2_2(JavaSerializationManager.java:238)
at org.jboss.remoting.serialization.impl.java.JavaSerializationManager.receiveObject(JavaSerializationManager.java:138)
at org.jboss.remoting.marshal.serializable.SerializableUnMarshaller.read(SerializableUnMarshaller.java:123)
at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.versionedRead(MicroSocketClientInvoker.java:1220)
at org.jboss.remoting.transport.socket.MicroSocketClientInvoker.transport(MicroSocketClientInvoker.java:850)
at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:165)
at org.jboss.remoting.Client.invoke(Client.java:1724)
at org.jboss.remoting.Client.invoke(Client.java:629)
at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:60)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.ejb3.proxy.impl.remoting.IsLocalProxyFactoryInterceptor.invoke(IsLocalProxyFactoryInterceptor.java:72)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)
at $Proxy0.createProxyBusiness(Unknown Source)
at org.jboss.ejb3.proxy.impl.objectfactory.session.SessionProxyObjectFactory.createProxy(SessionProxyObjectFactory.java:129)
at org.jboss.ejb3.proxy.impl.objectfactory.session.stateless.StatelessSessionProxyObjectFactory.getProxy(StatelessSessionProxyObjectFactory.java:79)
at org.jboss.ejb3.proxy.impl.objectfactory.ProxyObjectFactory.getObjectInstance(ProxyObjectFactory.java:158)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
at org.jnp.interfaces.NamingContext.getObjectInstance(NamingContext.java:1479)
at org.jnp.interfaces.NamingContext.getObjectInstanceWrapFailure(NamingContext.java:1496)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:822)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:686)
at javax.naming.InitialContext.lookup(InitialContext.java:351)
at com.ejb3.client.HelloClient.doLookup(HelloClient.java:40)
at com.ejb3.client.HelloClient.main(HelloClient.java:24)
at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:72)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.ejb3.proxy.impl.remoting.IsLocalProxyFactoryInterceptor.invoke(IsLocalProxyFactoryInterceptor.java:72)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102)
at org.jboss.aspects.remoting.PojiProxy.invoke(PojiProxy.java:62)
... 12 more
Exception in thread "main" java.lang.NullPointerException
at com.ejb3.client.HelloClient.main(HelloClient.java:25)

Here is my client class.

package com.ejb3.client;
import java.util.Properties;
import com.ejb3.client.ClientUtiliy;
import javax.naming.*;
import javax.annotation.Resource;

public class HelloClient {
@Resource
//private static SessionContext sctx;

public static void main (String[]args )throws Exception

{ Properties properties = new Properties(); // Context ctx = new InitialContext(properties); Context ctx = ClientUtiliy.getInitialContext(); // HelloBusiness helloBus = (HelloBusiness)ctx.lookup("HellowWorldEJBEAR/HellowWorldBean/remote"); //System.out.println("bean is saying "+helloBus.sayHello()); HelloBusiness bean = doLookup(); System.out.println(bean.sayHello()); // 4. Call business logic // HelloBusiness helloBus = (HelloBusiness)ctx.lookup("custom/remote/HelloBusiness"); //helloBus.sayHello(); }

private static HelloBusiness doLookup() {
Context context = null;
HelloBusiness bean = null;
try

{ // 1. Obtaining Context context = ClientUtiliy.getInitialContext(); // java.lang.Object ejbHome = context.lookup("HellowWorldEJBEAR/HellowWorldBean/remote"); // 2. Generate JNDI Lookup name // String lookupName = getLookupName(); // 3. Lookup and cast bean = (HelloBusiness) context.lookup("HelloBusiness"); // bean = (HelloBusiness) javax.rmi.PortableRemoteObject.narrow(ejbHome, HelloBusiness.class); }

catch (NamingException e)

{ e.printStackTrace(); }

return bean;
}

Have used @RemoteBinding annotation in the bean with the jndiBinding="HelloBusiness'