Putting struts.jar in your WEB-INF/lib directory is a good start. However, you will need not only struts.jar, but all the jar files that came with the download in your WEB-INF/lib directory.
Furthermore, this affects the classpath that will be used by the Application server at runtime, but does nothing to change your compile-time classpath. If you're using an
IDE, you will need to find out how to add jar files to your project build path and use that procedure to add the struts.jar file and its dependent jar files.
If you're compiling from the command line, you will need to add the struts.jar as part of the classpath. Example:
[ November 22, 2006: Message edited by: Merrill Higginson ]