View source for FAQ Why is the interface for my new extension point not visible?

When you declare a new extension point and a corresponding 
interface to implement, plug-ins that contribute to your extension 
point sometimes cannot see your interface. 
The reason is that your interface may not match the export tag&#146;
regular expression in 
your plug-in&#146;s runtime library tag. If your interface is 
called <tt>com.xyz.MyInterface</tt>, your <tt>plugin.xml</tt>
should look like this:
<pre>
   &lt;runtime&gt;
      &lt;library&gt; name="sample.jar"&gt;
         &lt;export name="com.xyz.MyInterface"/&gt;
      &lt;library&gt;
   &lt;runtime&gt;
</pre>
Multiple export tags can be used, in addition to wildcards.
The default tag set by the PDE is &#147;<tt>*</tt>&#148;, indicating that
all types in the JAR should be exported.

<hr><font size=-2>This FAQ was originally published in [http://www.eclipsefaq.org Official Eclipse 3.0 FAQs]. Copyright 2004, Pearson Education, Inc. All rights reserved. This text is made available here under the terms of the [http://www.eclipse.org/legal/epl-v10.html Eclipse Public License v1.0].</font>