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Article View: borland.public.jbuilder.java.language
Article #647

Re: java.lang.ClassNotFoundException

#647
From: John McGrath [TeamB]
Date: Wed, 06 Apr 2005 04:52
33 lines
2051 bytes
On 4/5/2005 at 10:13:12 PM, Lori M Olson [TeamB] wrote:

> This : "javax/mail/MessagingException" looks wrong.
> 
> It's like someone is doing a
> Class.forName("javax/mail/MessagingException"), instead of using the
> proper Class.forName("javax.mail.MessagingException").

There are two different "no such class" Throwables:

    java.lang.ClassNotFoundException
and
    java.lang.NoClassDefFoundError

You get a ClassNotFoundException when you try to dynamically load a class
using Class.forName() or similar methods.  This shows the full class name
with dots.  For example: "com.acme.Widget".

You get a NoClassDefFoundError when a class that was on the path during
compilation cannot be found at run-time.  This shows the full class name
with slashes.  For example: "com/acme/Widget".

I do not think there is any real reason for this.  I presume it is an
accident of implementation.

-- 
Regards,

John McGrath [TeamB]

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