[Jscheme-user] Re: [Beanshell-users] classpath questions

[Ken A. <kan...@bb...>]

At 02:05 PM 11/7/2003 +0100, Alex Greif wrote:
>hi,
>I have two questions concerning classspaths:
>
>- Is it possible to determine all classes in the complete classpath which implement a specific interface?

Yes.  If your ClassLoader is a subclass of URLClassLoader, which it often is, you can ask it for it's URL's with getURLs(), and get the URL's of its parent..., and get all the jars mentioned in the "sun.boot.class.path" System.property.  Then read all the jars to get class names, then load all the classes and see which ones implement the interface you're interested in.  I can send you code that does this if you're interested.

>- is it possible to get a list of all classes/ interfaces in a package?

I don't think Java reflection allows this, but you can use the above technique to find this information.


>thanks
>alex.
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