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newbie question: ejb3 tutorial examples
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created by <a href="http://community.jboss.org/people/ntk">Nikola Kolev</a> in <i>EJB 3.0</i> - <a href="http://community.jboss.org/message/557408#557408">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hello community,</p><p>I'm new to JBoss and the javaEE environment, and after playing around with the tutorials I have come across a problem with the java naming service (simple problem probably but still one I have found hard to overcome)</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>What I did:</p><p>1. I took the "Stateless" tutorial source code and created a .jar from it (without the Client.java).</p><p>2. I deployed the new .jar in my JBoss AS distribution, which is the latest JBoss 5 release. Restarted JBoss.</p><p>3. I checked if it is deployed correctly on the JBoss admin console.</p><p>4. I modified the Client.java the following way ( the underlined code is what I added ). </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><div id="_mcePaste">package org.jboss.tutorial.stateless.client;</div><div id="_mcePaste"> </div><div id="_mcePaste">import java.util.Hashtable;</div><div id="_mcePaste"> </div><div id="_mcePaste">import org.jboss.tutorial.stateless.bean.Calculator;</div><div id="_mcePaste">import org.jboss.tutorial.stateless.bean.CalculatorRemote;</div><div id="_mcePaste"> </div><div id="_mcePaste">import javax.naming.Context;</div><div id="_mcePaste">import javax.naming.InitialContext;</div><div id="_mcePaste"> </div><div id="_mcePaste">public class Client</div><div id="_mcePaste">{</div><div id="_mcePaste">   public static void main(String[] args) throws Exception</div><div id="_mcePaste">   {</div><div id="_mcePaste">      <span style="text-decoration: underline;">Hashtable properties = new Hashtable(); </span></div><div id="_mcePaste">      <span style="text-decoration: underline;">properties.put(Context.INITIAL_CONTEXT_FACTORY,"org.jnp.interfaces.NamingContextFactory"); </span></div><div id="_mcePaste">      <span style="text-decoration: underline;">properties.put(Context.PROVIDER_URL, "jnp://localhost:1099"); </span></div><div id="_mcePaste">      <span style="text-decoration: underline;">properties.put("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces"); </span></div><div id="_mcePaste">      InitialContext ctx = new InitialContext(properties);</div><div id="_mcePaste">      Calculator calculator = (Calculator) ctx.lookup("CalculatorBean/remote");</div><div id="_mcePaste"> </div><div id="_mcePaste">      System.out.println("1 + 1 = " + calculator.add(1, 1));</div><div id="_mcePaste">      System.out.println("1 - 1 = " + calculator.subtract(1, 1));</div><div id="_mcePaste">   }</div><div id="_mcePaste">}</div><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>.... and I received the following exception:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><p>Exception in thread "main" javax.naming.NoInitialContextException: Cannot instantiate class: org.jnp.interfaces.NamingContextFactory [Root exception is java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFactory]</p><p><span> </span>at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)</p><p><span> </span>at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)</p><p><span> </span>at javax.naming.InitialContext.init(Unknown Source)</p><p><span> </span>at javax.naming.InitialContext.<init>(Unknown Source)</p><p><span> </span>at org.jboss.tutorial.stateless.client.Client.main(Client.java:41)</p><p>Caused by: java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFactory</p><p><span> </span>at java.net.URLClassLoader$1.run(Unknown Source)</p><p><span> </span>at java.security.AccessController.doPrivileged(Native Method)</p><p><span> </span>at java.net.URLClassLoader.findClass(Unknown Source)</p><p><span> </span>at java.lang.ClassLoader.loadClass(Unknown Source)</p><p><span> </span>at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)</p><p><span> </span>at java.lang.ClassLoader.loadClass(Unknown Source)</p><p><span> </span>at java.lang.Class.forName0(Native Method)</p><p><span> </span>at java.lang.Class.forName(Unknown Source)</p><p><span> </span>at com.sun.naming.internal.VersionHelper12.loadClass(Unknown Source)</p><p><span> </span>... 5 more</p></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>What am I doing wrong?</p></div>
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