Run JNDI example problem

[nan sh]

I download this tutorial; http://java.sun.com/products/jndi/tutorial/index.html
try to run example Lookup.java as following;
(http://java.sun.com/products/jndi/tutorial/getStarted/examples/naming.html);
//file Lookup.java
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import java.util.Hashtable;
class Lookup {
public static void main(String[] args) {
// Check that user has supplied name of file to lookup
if (args.length != 1) {
System.err.println("usage: java Lookup <filename>");
System.exit(-1);
}
String name = args[0];
// Identify service provider to use
Hashtable env = new Hashtable(11);
env.put(Context.INITIAL_CONTEXT_FACTORY,
"com.sun.jndi.fscontext.RefFSContextFactory");
try {
// Create the initial context
Context ctx = new InitialContext(env);
// Look up an object
Object obj = ctx.lookup(name);
// Print it out
System.out.println(name + " is bound to: " + obj);

// Close the context when we're done
ctx.close();
} catch (NamingException e) {
System.err.println("Problem looking up " + name + ": " + e);
}
}
}

I put fscontext.jar , providerutil.jar and jndi.jar under JAVA_HOME\jer\lib\ext
I get the following exception;
Problem looking up c:\Java: javax.naming.NoInitialContextException: Cannot instantiate class: com.sun.jndi.fscontext.RefFSContextFactory [Root exception is java.lang.ClassNotFoundException: com.sun.jndi.fscontext.RefFSContextFactory]
why can not instantiate class:
com.sun.jndi.fscontext.RefFSContextFactory, fscontext.jar is there.

[Marcos Maia]

Hi,
set your CLASSPATH to point to the file fscontext.jar, I think this should solve this problem, if you still have the same message check the jar file to see if the class can be found inside it.
regards

[nan sh]

Thanks Marcos.
It realy solves the problem. But I am wondering why JVM cannot see all those *.jar in JAVA_HOME\jer\lib\ext?