Noelia Delgado [http://community.jboss.org/people/Zoeley] created the discussion "javax.naming.NoInitialContextException: Cannot instantiate class" To view the discussion, visit: http://community.jboss.org/message/558637#558637 -------------------------------------------------------------- Hi, I have a problem when I want to run my application's jar, it's a standalone app and I don't have this problem when I run it into Eclipse. I'm using Jboss 5.1.0GA, maven 2.2.1 and JDK 1.6.18. PS C:\Workspace\hre\target> java -jar AppClient.jar java.exe : javax.naming.NoInitialContextException: Cannot instantiate class: or g.jnp.interfaces.NamingContextFactory [Root exception is java.lang.ClassNotFoun dException: org.jnp.interfaces.NamingContextFactory] At line:1 char:5 + java <<<<  -jar AppClient.jar     + CategoryInfo          : NotSpecified: (javax.naming.No...ContextFactory]    :String) [], RemoteException     + FullyQualifiedErrorId : NativeCommandError     at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:657)     at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288)     at javax.naming.InitialContext.init(InitialContext.java:223)     at javax.naming.InitialContext.<init>(InitialContext.java:197)     at util.Contexto.<init>(Contexto.java:22)     at mesa_entrada.IdPaciente.setContexto(IdPaciente.java:1627)     at mesa_entrada.IdPaciente.<init>(IdPaciente.java:185)     at principal.Escritorio$2.actionPerformed(Escritorio.java:206)     at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)     at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2 318)     at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.ja va:387)     at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)     at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonList ener.java:236)     at java.awt.Component.processMouseEvent(Component.java:6263)     at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)     at java.awt.Component.processEvent(Component.java:6028)     at java.awt.Container.processEvent(Container.java:2041)     at java.awt.Component.dispatchEventImpl(Component.java:4630)     at java.awt.Container.dispatchEventImpl(Container.java:2099)     at java.awt.Component.dispatchEvent(Component.java:4460)     at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574)     at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)     at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)     at java.awt.Container.dispatchEventImpl(Container.java:2085)     at java.awt.Window.dispatchEventImpl(Window.java:2478)     at java.awt.Component.dispatchEvent(Component.java:4460)     at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)     at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread. java:269)     at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.jav a:184)     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread. java:174)     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)     at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) Caused by: java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFa ctory     at java.net.URLClassLoader$1.run(URLClassLoader.java:202)     at java.security.AccessController.doPrivileged(Native Method)     at java.net.URLClassLoader.findClass(URLClassLoader.java:190)     at java.lang.ClassLoader.loadClass(ClassLoader.java:307)     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)     at java.lang.ClassLoader.loadClass(ClassLoader.java:248)     at java.lang.Class.forName0(Native Method)     at java.lang.Class.forName(Class.java:247)     at com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.java:4 6)     at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:654)     ... 32 more This is my code: public Contexto() throws NamingException{ Properties env = new Properties(); // Try with a login that should succeed env.setProperty("java.naming.factory.initial","org.jnp.interfaces.NamingContextFactory"); env.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces"); env.setProperty(Context.URL_PKG_PREFIXES, "org.jboss.naming.client"); env.setProperty("java.naming.provider.url", "localhost:1099"); env.setProperty(Context.SECURITY_CREDENTIALS, ""); env.setProperty(Context.SECURITY_PRINCIPAL, ""); env.setProperty(Context.SECURITY_PROTOCOL, "java:/jaas/App"); this.ctx = new InitialContext(env); } I added my server.log If anyone can help me I would appreciate it. Thanks -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/558637#558637] Start a new discussion in Beginner's Corner at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]