Error in servlet page:java.lang.NoClassDefFoundError: javax/

[shink]

Hi all:

I user Jboss-2.4.3
win2000 pro
tomcat 4.1
The demo ejb deployed ok.
The source code in servlet init() below:

System.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
System.setProperty("java.naming.provider.url", "localhost:1099");
try
{
InitialContext jndiContext = new InitialContext();
System.out.println (jndiContext);
Object ref = jndiContext.lookup("demo/Demo");
.....

I got the InitialContext,but then error happend with web page diaply"java.lang.NoClassDefFoundError: javax/ejb/EJBHome".

I had success to excute this servlet befor in another computer.What's wrong happened here?
Thanks a lot.
Joe

[joelvogt]

do you mean another computer with exactly the same setup?

[shink]

I don't rember exactly the setup,but the program is same.
maybe some jar is not in property position ?