Phi GF [http://community.jboss.org/people/phiboss] created the discussion "Mini (Stateful) EJB 3 Example using JBoss and Eclipse" To view the discussion, visit: http://community.jboss.org/message/630901#630901 -------------------------------------------------------------- Hello Community (appologise I am new to JBoss 3.0) I am looking for a simple EJB 3.0 Example using a Stateful Bean to demonstrate the components and concepts of an application server. I have searched several forums and googled a lot, but I have found mostly solutions to Problems I did not encounter. (I have an EJB 2 Example, which is not applicable, because my trainees will work on EJB 3.0 or 3.1 later.) Here my configuration: *JBoss Application Server 7.0.1 final* *OS: Linux Ubuntu 64 Bit (10.10)* *Eclipse 64 Bit J2EE (indigo)* *Java 1.6.0_26* I have 2 Projects in my Eclipse Workbench (a Server + a Client). The Server contains 2 classes: MyTimerRemote.java: package ch.my.timer.server; import javax.ejb.Remote; @Remote public interface MyTimerRemote {   void  setRemainingSecs(int seconds);   float getRemainingSecs(); } and MyTimer.java (also on the server): package ch.my.timer.server; import javax.ejb.Stateful; /** * Session Bean implementation class MyTimer */ @Stateful public class MyTimer implements MyTimerRemote {     public MyTimer() {         this.endTimePoint = System.currentTimeMillis();     }     private long endTimePoint; // timestamp in milliseconds     @Override     public void setRemainingSecs(int seconds) {         long millis = seconds * 1000;         long now    = System.currentTimeMillis();         this.endTimePoint = now + millis;     }     @Override     public float getRemainingSecs() {         long now   = System.currentTimeMillis();         long diff  = this.endTimePoint - now;         float secs = (float) (diff / 1000.0);         return secs;     } } The Client Project contains a simple Test class (MyTimerTest.java): package ch.my.timer.client; import java.util.Hashtable; import javax.naming.Context; import javax.naming.InitialContext; import javax.naming.NamingException; import  ch.my.timer.server.*; public class MyTimerTest {   public static void main(String[] args) {      try {         new MyTimerTest().top();      } catch (NamingException e) {         // TODO Auto-generated catch block         e.printStackTrace();      }    }    void top() throws NamingException {       Hashtable<String, String> env = new Hashtable<String, String>();            env.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");           env.put(Context.PROVIDER_URL, "localhost:1099");            env.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces" );       InitialContext ctx = new InitialContext(env);       MyTimerRemote str = (MyTimerRemote) ctx.lookup("java:module/SantisTimer");       str.setRemainingSecs(3);       float rem = str.getRemainingSecs();       System.out.println("Remaining: " + rem);    } } Starting the server (using "run on server -> JBoss 7.0 Runtime Server, i get the following output: 15:05:06,995 INFO  [org.jboss.modules] JBoss Modules version 1.0.1.GA 15:05:07,394 INFO  [org.jboss.msc] JBoss MSC version 1.0.0.GA   ... 15:05:11,026 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-2) Starting deployment of "EJB_Servenull" 15:05:11,146 INFO  [org.jboss.as.jpa] (MSC service thread 1-1) added javax.persistence.api dependency to EJB_Servenull 15:05:11,237 INFO  [org.jboss.as.ejb3.deployment.processors.EjbJndiBindingsDeploymentUnitProcessor] (MSC service thread 1-4) JNDI bindings for session bean named MyTimer in deployment unit deployment "EJB_Servenull" are as follows:     java:global/EJB_Servenull/MyTimer!ch.my.timer.server.MyTimerRemote     java:app/EJB_Servenull/MyTimer!ch.my.timer.server.MyTimerRemote     java:module/MyTimer!ch.my.timer.server.MyTimerRemote     java:global/EJB_Servenull/MyTimer     java:app/EJB_Servenull/MyTimer     java:module/MyTimer 15:05:11,434 INFO  [org.jboss.as.server.controller] (DeploymentScanner-threads - 2) Deployed "EJB_Servenull" Starting the client (run as Java Application) I get: javax.naming.CommunicationException: Receive timed out [Root exception is java.net.SocketTimeoutException: Receive timed out]     at org.jnp.interfaces.NamingContext.discoverServer(NamingContext.java:1302)     at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1382)     at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:579)     at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:572)     at javax.naming.InitialContext.lookup(InitialContext.java:392)     at ch.my.timer.client.MyTimerTest.top(MyTimerTest.java:28)     at ch.my.timer.client.MyTimerTest.main(MyTimerTest.java:14) Caused by: java.net.SocketTimeoutException: Receive timed out     at java.net.PlainDatagramSocketImpl.receive0(Native Method)     at java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java:145)     at java.net.DatagramSocket.receive(DatagramSocket.java:725)     at org.jnp.interfaces.NamingContext.discoverServer(NamingContext.java:1272)     ... 6 more Any Ideas? What am I missing? Thanks in advance. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/630901#630901] Start a new discussion in EJB3 Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]