not be in the deployed war as the servlet container provides its own version of these libraries. This is taken care of in the included ant build.xml file. 2) The "jstl-1.2.jar" library (for JSTL support) contains both the API and implementation. See BalusC's response to javax.servlet.ServletException: java.lang.NoClassDefFoundError: javax/servlet/jsp/jstl/core/ConditionalTagSupport . Want to