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Your Trail jndi > directory > jndi Table of Contents [show]     1 Introduction     2 com.sun.jndi.nis.NISCtxFactory [Root exception is java.lang.ClassNotFoundException: com.sun.jndi.nis.NISCtxFactory] Keywords CORBA, DNS, LDAP, NDS, NIS, RMI, axis, directory, naming Copyright Information This article is licensed under GNU Public License. Some of the images in this article may have different copyright licenses. Please follow the URLs of the images for detailed information about their specific copyright licenses. Contact webmasters for more information on copyright issues. 1 Introduction JNDI is short for Java Naming and Directory Service. It provides naming and directory functionalities to Java applications. In short, JNDI provides a Java-based unified interface for naming and directory service. A variety of naming and directory service implementations can be accessed in a unified way: be it LDAP, DNS, NIS, NDS, RMI, or CORBA. The following images shows how JNDI unifies various naming and directory services[SunJndi] 2 com.sun.jndi.nis.NISCtxFactory [Root exception is java.lang.ClassNotFoundException: com.sun.jndi.nis.NISCtxFactory] In my case, it was caused by missing nis.jar and providerutil.jar so JVM doesnot know where to get the NISCtxFactory class. I was using nis lookup in an axis service, everything worked fine after I put the two jar files into axis_home/WEB-INF/lib/ Comments References [SunJndi] SUN Microsystems http://java.sun.com/products/jndi/tutorial V.E.R.A Acronyms Java Naming and Directory Interface (JavaSoft, API, Java) (search time: 75.065 msec)