Cannot instantiate class: javax.naming.spi.InitialContextFactory

[Daniel Alex Finkelstein]

I'm using JDK 1.2.2 with the Java Plug-in to Netscape Communicator 4.61
on NT 4.0 sp5 and JNDI 1.2.

When trying to run my applet, the following appears in my java console:

javax.naming.NoInitialContextException: Cannot instantiate class:
javax.naming.spi.InitialContextFactory. Root exception
is java.lang.ClassNotFoundException:
javax/naming/spi/InitialContextFactory

However, in my code I have

import javax.naming.*;
import javax.naming.directory.*;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.DirContext;
import javax.naming.spi.InitialContextFactory;

[snip]

Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY,"javax.naming.spi.InitialContext
Factory");
env.put(Context.PROVIDER_URL,"ldap://entrust.wisdom.siac.com:389");
DirContext ctx = new InitialDirContext(env);

and the class in question is in the jar file I have, with the directory
structure intact. Any ideas what I'm doing wrong?

Thanks.

--
Daniel Alex Finkelstein
New Technologies
Securities Industry Automation Corporation
http://www.siac.com

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[Scott Seligman]

Daniel Alex Finkelstein <dfin...@siac.com> writes:
>
> I'm using JDK 1.2.2 with the Java Plug-in to Netscape Communicator 4.61
> on NT 4.0 sp5 and JNDI 1.2.

>...
> env.put(Context.INITIAL_CONTEXT_FACTORY,"javax.naming.spi.InitialContextFactory");

This property's value should be "com.sun.jndi.ldap.LdapCtxFactory",
and the corresponding JAR files must be in the browser's classpath
(download the LDAP service provider for JNDI).

>import javax.naming.directory.InitialDirContext;
>import javax.naming.directory.DirContext;
>import javax.naming.spi.InitialContextFactory;

You can omit these lines.

Scott Seligman
Java Software Engineering
Sun Microsystems

[Daniel Alex Finkelstein]

In article <7nimbb$g3q$1...@engnews3.Eng.Sun.COM>,

Scott Seligman <seli...@eng.sun.com> wrote:
> This property's value should be "com.sun.jndi.ldap.LdapCtxFactory",
> and the corresponding JAR files must be in the browser's classpath
> (download the LDAP service provider for JNDI).
>
> >import javax.naming.directory.InitialDirContext;
> >import javax.naming.directory.DirContext;
> >import javax.naming.spi.InitialContextFactory;
>
> You can omit these lines.

Done.

> Scott Seligman
> Java Software Engineering
> Sun Microsystems
>

I added an import line

import javax.naming.ldap.*;

And the java console now reports:

javax.naming.NoInitialContextException: Cannot instantiate class:
com.sun.jndi.ldap.LdapCtxFactory. Root exception is
java.lang.ClassNotFoundException: com/sun/jndi/ldap/LdapCtxFactory

The class is in the correct directory structure in the jar.