The solution is the next:
Properties properties = new Properties();
properties.put( javax.naming.Context.PROVIDER_URL, "T3://IP:PORT/" );
properties.put( javax.naming.Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory" );
context = new InitialContext( properties );
Object initialReference = context.lookup(key_jndi);
objValue = (Object)javax.rmi.PortableRemoteObject.narrow(initialReference, Object.class );
return objValue;
Thanks for all.