Help needed in JMS

Question

i m new to java,,, running one simple code in JMS Topic... using weblogic.... server.. please help me as it is givng me the error.. that i have pasted below. thanx in advance
Deepali
my publisher code i m giving below :
***************************************88
import javax.naming.*;
import javax.naming.InitialContext;
import javax.jms.JMSException;
import javax.jms.Topic;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.jms.TopicPublisher;
import javax.jms.DeliveryMode;
import javax.jms.TopicSession;
import javax.jms.TopicConnection;
import javax.jms.TopicConnectionFactory;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.*;
public class Publisher
public static void main(String[] args) throws Exception
          Hashtable env = new Hashtable();
          env.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
          env.put(Context.PROVIDER_URL, "t3://localhost:7001");
// get the initial context
InitialContext ctx = new InitialContext(env);
     //InitialContext ctx = getInitialContext("t3://localhost:7001");
// lookup the topic object
Topic topic = (Topic) ctx.lookup("topic0");
// lookup the topic connection factory
TopicConnectionFactory connFactory = (TopicConnectionFactory) ctx.
lookup("topic/connectionFactory");
// create a topic connection
TopicConnection topicConn = connFactory.createTopicConnection();
// create a topic session
TopicSession topicSession = topicConn.createTopicSession(false,
Session.AUTO_ACKNOWLEDGE);
// create a topic publisher
TopicPublisher topicPublisher = topicSession.createPublisher(topic);
topicPublisher.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
// create the "Hello World" message
TextMessage message = topicSession.createTextMessage();
message.setText("Hello World");
// publish the messages
topicPublisher.publish(message);
// print what we did
System.out.println("published: " + message.getText());
// close the topic connection
topicConn.close();
it is givng following error?.. can some one explaine me y?...
Exception in thread "main" javax.naming.NameNotFoundException: Unable to resolve 'topic0' Resolved: '' Unresol
ved:'topic0' ; remaining name 'topic0'
at weblogic.rmi.internal.BasicOutboundRequest.sendReceive(BasicOutboundRequest.java:109)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:263)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:230)
at weblogic.jndi.internal.ServerNamingNode_WLStub.lookup(Unknown Source)
at weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:337)
at weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:332)
at javax.naming.InitialContext.lookup(InitialContext.java:350)
at Publisher.main(Publisher.java:33)

Answer 1

Could you tell me how the error was resolved, I am getting same error>
Thanks
i m new to java,,, running one simple code in JMS Topic... using weblogic.... server.. please help me as it is givng me the error.. that i have pasted below. thanx in advance
Deepali
my publisher code i m giving below :
***************************************88
import javax.naming.*;
import javax.naming.InitialContext;
import javax.jms.JMSException;
import javax.jms.Topic;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.jms.TopicPublisher;
import javax.jms.DeliveryMode;
import javax.jms.TopicSession;
import javax.jms.TopicConnection;
import javax.jms.TopicConnectionFactory;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.*;
public class Publisher
public static void main(String[] args) throws Exception
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
env.put(Context.PROVIDER_URL, "t3://localhost:7001");
// get the initial context
InitialContext ctx = new InitialContext(env);
//InitialContext ctx = getInitialContext("t3://localhost:7001");
// lookup the topic object
Topic topic = (Topic) ctx.lookup("topic0");
// lookup the topic connection factory
TopicConnectionFactory connFactory = (TopicConnectionFactory) ctx.
lookup("topic/connectionFactory");
// create a topic connection
TopicConnection topicConn = connFactory.createTopicConnection();
// create a topic session
TopicSession topicSession = topicConn.createTopicSession(false,
Session.AUTO_ACKNOWLEDGE);
// create a topic publisher
TopicPublisher topicPublisher = topicSession.createPublisher(topic);
topicPublisher.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
// create the "Hello World" message
TextMessage message = topicSession.createTextMessage();
message.setText("Hello World");
// publish the messages
topicPublisher.publish(message);
// print what we did
System.out.println("published: " + message.getText());
// close the topic connection
topicConn.close();
it is givng following error?.. can some one explaine me y?...
Exception in thread "main" javax.naming.NameNotFoundException: Unable to resolve 'topic0' Resolved: '' Unresol
ved:'topic0' ; remaining name 'topic0'
at weblogic.rmi.internal.BasicOutboundRequest.sendReceive(BasicOutboundRequest.java:109)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:263)
at weblogic.rmi.cluster.ReplicaAwareRemoteRef.invoke(ReplicaAwareRemoteRef.java:230)
at weblogic.jndi.internal.ServerNamingNode_WLStub.lookup(Unknown Source)
at weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:337)
at weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:332)
at javax.naming.InitialContext.lookup(InitialContext.java:350)
at Publisher.main(Publisher.java:33)