Stuck In the Mud with First EJB

Question

I am using the apress 'Beginning Java EE, from Novice to Professional' book. In its first EJB example it attempts to create am extremely simple stateless session bean. There are two classes and a remote interface as follows;
package beans;
import javax.ejb.Remote;
@Remote
public interface SimpleSession
public String getEchoString(String clientString);
package beans;
import javax.ejb.Stateless;
@Stateless
public class SimpleSessionBean implements SimpleSession {
public String getEchoString(String clientString) {
return clientString + " - from session bean";
package client;
import beans.SimpleSession;
import javax.naming.InitialContext;
public class SimpleSessionClient {
public static void main(String[] args) throws Exception
InitialContext ctx = new InitialContext();
SimpleSession simpleSession
= (SimpleSession) ctx.lookup(SimpleSession.class.getName());
for (int i = 0; i < args.length; i++) {
String returnedString = simpleSession.getEchoString(args);
System.out.println("sent string: " + args[i] +
", received string: " + returnedString);
The directory structure is;
SimpleSessionApp
|-beans
|-SimpleSession
|-SimpleSessionBean
|-client
|-SimpleSessionClientThe tells you to add the following to your classpath;
set CLASSPATH=.;C:\jboss\lib\concurrent.jar;
C:\jboss\lib\jboss-common.jar;
c:\jboss\client\jboss-j2ee.jar;
c:\jboss\lib\commons-httpclient.jar;
C:\jboss\server\all\lib\jboss.jar;
C:\jboss\server\all\lib\jboss-remoting.jar;
C:\jboss\server\all\lib\jboss-transaction.jar;
C:\jboss\server\all\lib\jnpserver.jar;
C:\jboss\server\all\deploy\ejb3.deployer\jboss-ejb3.jar;
C:\jboss\server\all\deploy\ejb3.deployer\jboss-ejb3x.jar;
C:\jboss\server\all\deploy\jboss-aop.deployer\
jboss-aop.jar;
C:\jboss\server\all\deploy\jboss-aop.deployer\
jboss-aspect-library.jar
The next step is to compile the java source  code;
javac -d . client/*.java
javac -d . beans/*.javaAfter this you create an ejb3 jar;
jar cf SimpleSessionApp.ejb3 beans\*.javaAnd deploy this jar to your jboss deploy directory while jboss is running. Once this is done you run the client with the following arguments and switches while inside the client directory of SimpleSessionApp;
java
-Djava.naming.factory.initial=
org.jnp.interfaces.NamingContextFactory
-Djava.naming.factory.url.pkgs=
org.jboss.naming:org.jnp.interfaces
-Djava.naming.provider.url=
localhost client.SimpleSessionClient
Now is the time for all good men
After having done all of this I get the following error
+Exception in thread "main" java.lang.NoSuchMethodError: main+
why is this? This is my first attempt at creating an ejb and I'm totally lost. Any help would be appreciated.
Edited by: Jazman on Feb 19, 2008 2:42 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Answer 1

if you turn the computer off and turn it back on while you hold down the mouse key that should get the disc out.