[jboss-jira] [JBoss JIRA] (JBAS-9528) I am trying to implement hellow world bean example in EJB 3.0 on Jboss and getting following error while running the client .

Sambprasad Kuvalekar (JIRA) jira-events at lists.jboss.org
Tue Jan 29 08:41:47 EST 2013


     [ https://issues.jboss.org/browse/JBAS-9528?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sambprasad Kuvalekar updated JBAS-9528:
---------------------------------------

    Description: 
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'




  was:

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'





    
> I am trying to implement hellow world bean example in EJB 3.0 on Jboss and getting following error while running the client .
> -----------------------------------------------------------------------------------------------------------------------------
>
>                 Key: JBAS-9528
>                 URL: https://issues.jboss.org/browse/JBAS-9528
>             Project: Application Server 3  4  5 and 6
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: AppClient
>         Environment: JBOSS 5.1.GA, EJB 3.X , JAVA 1.5 
>            Reporter: Sambprasad Kuvalekar
>
> 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'

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