my problem in client of EJB

[alvandrood]

Hello

I'm new in EJB , I tried to develop my first EJB so I used this document :
InformIT: Creating a Session Bean > A "Hello World" Session Bean

I've created an EJB and I deployed it to the application server (Sun application server) like what is written in Sample

After I deployed the EJB when I refer to "Admin Console" page of Application Server (Sun SDK5) " Application Server -> Applications -> Enterprise Applications" section , in the right page table(Deployed Enterprise Applications table) it shows that HelloWorld in "Application Name" filed True
in "Enabled" filed and ${com.sun.aas.instanceRoot}/applications/j2ee-apps/HelloWorld in "Location" filed
I think it shows the EJB deployed successfully (It's image has been attached)

And I use a stand-alone Client application to use my EJB in follow I've written it's code(but not complete):

package usingj2ee.hello;
 
import java.util.Properties;
 
import java.util.*;
import javax.naming.*;
import javax.rmi.*;
 
 
public class client {
    public client() {
    }
    public static void main(String[] args) throws Exception{
        Properties env = new Properties(); 
        env.put(Context.INITIAL_CONTEXT_FACTORY, 
          "com.sun.jndi.cosnaming.CNCtxFactory"); 
        env.put(Context.PROVIDER_URL, "iiop://localhost:9010");       
        Context initial = new InitialContext(env); 
 
      ...
 
    }
}

when I trace the client code when it run "Context initial = new InitialContext(env)" line it retrun this error (HelloWorldClient.jar the client jar file that produced by deployetool is added to -classpath) :

Apr 21, 2010 2:14:14 PM com.sun.corba.se.impl.transport.SocketOrChannelConnectionImpl <init>
WARNING: "IOP00410201: (COMM_FAILURE) Connection failure: socketType: IIOP_CLEAR_TEXT; hostname: localhost; port: 9010"
org.omg.CORBA.COMM_FAILURE:   vmcid: SUN  minor code: 201  completed: No
	at com.sun.corba.se.impl.logging.ORBUtilSystemException.connectFailure(ORBUtilSystemException.java:2172)
	at com.sun.corba.se.impl.logging.ORBUtilSystemException.connectFailure(ORBUtilSystemException.java:2193)
	at com.sun.corba.se.impl.transport.SocketOrChannelConnectionImpl.<init>(SocketOrChannelConnectionImpl.java:205)
	at com.sun.corba.se.impl.transport.SocketOrChannelConnectionImpl.<init>(SocketOrChannelConnectionImpl.java:218)
	at com.sun.corba.se.impl.transport.SocketOrChannelContactInfoImpl.createConnection(SocketOrChannelContactInfoImpl.java:101)
	at com.sun.corba.se.impl.protocol.CorbaClientRequestDispatcherImpl.beginRequest(CorbaClientRequestDispatcherImpl.java:152)
	at com.sun.corba.se.impl.protocol.CorbaClientDelegateImpl.request(CorbaClientDelegateImpl.java:118)
	at com.sun.corba.se.impl.resolver.BootstrapResolverImpl.invoke(BootstrapResolverImpl.java:74)
	at com.sun.corba.se.impl.resolver.BootstrapResolverImpl.resolve(BootstrapResolverImpl.java:107)
	at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(CompositeResolverImpl.java:22)
	at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(CompositeResolverImpl.java:22)
	at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(CompositeResolverImpl.java:22)
	at com.sun.corba.se.impl.orb.ORBImpl.resolve_initial_references(ORBImpl.java:1157)
	at com.sun.jndi.cosnaming.CNCtx.setOrbAndRootContext(CNCtx.java:340)
	at com.sun.jndi.cosnaming.CNCtx.initUsingIiopUrl(CNCtx.java:289)
	at com.sun.jndi.cosnaming.CNCtx.initUsingUrl(CNCtx.java:245)
	at com.sun.jndi.cosnaming.CNCtx.initOrbAndRootContext(CNCtx.java:209)
	at com.sun.jndi.cosnaming.CNCtx.<init>(CNCtx.java:69)
	at com.sun.jndi.cosnaming.CNCtxFactory.getInitialContext(CNCtxFactory.java:32)
	at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667)
	at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247)
	at javax.naming.InitialContext.init(InitialContext.java:223)
	at javax.naming.InitialContext.<init>(InitialContext.java:197)
	at usingj2ee.hello.client.main(client.java:18)
Caused by: java.net.ConnectException: Connection refused: connect
	at sun.nio.ch.Net.connect(Native Method)
	at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:464)
	at java.nio.channels.SocketChannel.open(SocketChannel.java:146)
	at com.sun.corba.se.impl.transport.DefaultSocketFactoryImpl.createSocket(DefaultSocketFactoryImpl.java:60)
	at com.sun.corba.se.impl.transport.SocketOrChannelConnectionImpl.<init>(SocketOrChannelConnectionImpl.java:188)
	... 21 more
Exception in thread "main" javax.naming.CommunicationException: Cannot connect to ORB [Root exception is org.omg.CORBA.COMM_FAILURE:   vmcid: SUN  minor code: 201  completed: No]
	at com.sun.jndi.cosnaming.CNCtx.setOrbAndRootContext(CNCtx.java:362)
	at com.sun.jndi.cosnaming.CNCtx.initUsingIiopUrl(CNCtx.java:289)
	at com.sun.jndi.cosnaming.CNCtx.initUsingUrl(CNCtx.java:245)
	at com.sun.jndi.cosnaming.CNCtx.initOrbAndRootContext(CNCtx.java:209)
	at com.sun.jndi.cosnaming.CNCtx.<init>(CNCtx.java:69)
	at com.sun.jndi.cosnaming.CNCtxFactory.getInitialContext(CNCtxFactory.java:32)
	at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667)
	at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247)
at javax.naming.InitialContext.init(InitialContext.java:223)
at javax.naming.InitialContext.<init>(InitialContext.java:197)
at usingj2ee.hello.client.main(client.java:18)
aused by: org.omg.CORBA.COMM_FAILURE:   vmcid: SUN  minor code: 201  completed: No
at com.sun.corba.se.impl.logging.ORBUtilSystemException.connectFailure(ORBUtilSystemException.java:2172)
at com.sun.corba.se.impl.logging.ORBUtilSystemException.connectFailure(ORBUtilSystemException.java:2193)
at com.sun.corba.se.impl.transport.SocketOrChannelConnectionImpl.<init>(SocketOrChannelConnectionImpl.java:205)
at com.sun.corba.se.impl.transport.SocketOrChannelConnectionImpl.<init>(SocketOrChannelConnectionImpl.java:218)
at com.sun.corba.se.impl.transport.SocketOrChannelContactInfoImpl.createConnection(SocketOrChannelContactInfoImpl.java:101)
at com.sun.corba.se.impl.protocol.CorbaClientRequestDispatcherImpl.beginRequest(CorbaClientRequestDispatcherImpl.java:152)
at com.sun.corba.se.impl.protocol.CorbaClientDelegateImpl.request(CorbaClientDelegateImpl.java:118)
at com.sun.corba.se.impl.resolver.BootstrapResolverImpl.invoke(BootstrapResolverImpl.java:74)
at com.sun.corba.se.impl.resolver.BootstrapResolverImpl.resolve(BootstrapResolverImpl.java:107)
at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(CompositeResolverImpl.java:22)
at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(CompositeResolverImpl.java:22)
at com.sun.corba.se.impl.resolver.CompositeResolverImpl.resolve(CompositeResolverImpl.java:22)
at com.sun.corba.se.impl.orb.ORBImpl.resolve_initial_references(ORBImpl.java:1157)
at com.sun.jndi.cosnaming.CNCtx.setOrbAndRootContext(CNCtx.java:340)
Caused by: java.net.ConnectException: Connection refused: connect

Do you know the cause of this error ?

thank you