error while running a stateless session bean in netbeans 6.9.1

[shriram iyer]

/**
 *
 * @author Administrator
 */
import com.sess.NewSessionBeanLocal;
import com.sess.NewSessionBeanRemote;
import javax.rmi.*;
import java.util.*;
import javax.naming.*;
public class Client
{
public static void main(String ar[])
{
try
{
Properties p=new Properties();
p.put(Context.PROVIDER_URL,"iiop://localhost:3700");//ur server ip
p.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.enterprise.naming.SerialInitContextFactory");
InitialContext ic=new InitialContext(p);
Object obj=ic.lookup("NewSessionBean");
NewSessionBeanLocal h=(NewSessionBeanLocal)PortableRemoteObject.narrow(obj,NewSessionBeanLocal.class);
NewSessionBeanRemote r=h.create();
System.out.println(r.display());
}
catch(Exception e)
{
e.printStackTrace();
}
}
}

i am using netbeans 6.9.1.
above code is my client program for ejb stateless session bean. i am getting following error while running this code

Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/logging/LogDomains
at com.sun.enterprise.util.ORBManager.<clinit>(ORBManager.java:78)
at com.sun.enterprise.naming.SerialInitContextFactory.<clinit>(SerialInitContextFactory.java:56)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)

i like to know the jar containing the class com.sun.logging.LogDomains,and from where to download that jar