java - Exceptions with EJB3 -

i using method in session bean surrounded try , catch bloc ioexception , looks making problem when try call method java project client here bean code

package com.et; import com.gestionfichier.gestion.*; import java.io.ioexception; import javax.ejb.applicationexception; import javax.ejb.stateless;  @stateless public class premierejb3bean implements premierejb3 {      public string envoicode(string code)  {        string s = null;        try {            s = gestionfichier.copiercode(code);        } catch (ioexception e) {            e.printstacktrace();        }        compilerfichierc.compilerfichier(s,s);        return "compilation réussie !";     } } 

and here client bean code:

package com.et; import javax.naming.context; import javax.naming.initialcontext; import javax.naming.namingexception;  public class premierejb3client {      public static void main(string[] args)   {         try {            context context = new initialcontext();            premierejb3 beanremote = (premierejb3)            context.lookup("premierejb3bean/remote");            system.out.println(beanremote.envoicode("somthing"));        } catch (namingexception e) {            e.printstacktrace();        }     } } 

and here in console

    exception in thread "main" java.lang.reflect.undeclaredthrowableexception @ $proxy0.envoicode(unknown source) @ com.et.premierejb3client.main(premierejb3client.java:15)     caused by: java.lang.classnotfoundexception: [ljava.lang.stacktraceelement; @ java.net.urlclassloader$1.run(unknown source) @ java.net.urlclassloader$1.run(unknown source) @ java.security.accesscontroller.doprivileged(native method) @ java.net.urlclassloader.findclass(unknown source) @ java.lang.classloader.loadclass(unknown source) @ sun.misc.launcher$appclassloader.loadclass(unknown source) @ java.lang.classloader.loadclass(unknown source)     , more.... 

so quiet sure exceptions in bean causing me problem have no idea how fix

in order jndi lookup ejb standalone client, context properties needs added.

something similar below.

hashtable<string, string> ht = new hashtable<string, string>(); ht.put(context.initial_context_factory, "weblogic.jndi.wlinitialcontextfactory"); context ct=new initialcontext(ht);