Unused classes

[Dean John]

Is there a tool or code to find unused classes.
Some details of the development environement are as follows -
IDE - IBM's WSAD
jdk version 1.3
Creating web application using Servlet/Jsp.
Thanks.

[Michael Morris]

Originally posted by Dean John:
Is there a tool or code to find unused classes.
Some details of the development environement are as follows -
IDE - IBM's WSAD
jdk version 1.3
Creating web application using Servlet/Jsp.
Thanks.

Need a little clarification here. Do you mean what classes are not used from a particular jar or war file or package? In the current implementation of java.lang.ClassLoader there is a private Vector named classes that holds a reference to all Classes that have been loaded. With reflection you can possibly change the access level from private to public and get at that Vector. If you can't do it, it will be because of a SecurityException.

[Dirk Schreckmann]

Welcome to JavaRanch, Dean!
I've not made a mental note of any products that purport to search for unused classes. Borland's Optimizeit Code Coverage for Java does claim to allow "developers to view in real time how frequently each class ... is executed." I suppose this might get the job done for you.
[ June 29, 2003: Message edited by: Dirk Schreckmann ]

[Dirk Schreckmann]

I'm moving this to the IDEs and Other Tools forum...

[Jon Strayer]

Try RefactorIT
Not Used Finds unused classes, interfaces and members with the whole project or within a package.

[Frank Carver]

Or for a more practical approach, you could look at genjar. It enables you to build a jar file (or directory of class files) containing only the classes you need, regardless of where they came from. I use it all the time to "trim the fat" from my web applications.
[ June 29, 2003: Message edited by: Frank Carver ]