JSTL problem with tomcat 6

Tomcat 6 implements JSP 2.1.
The TLD file is included in the jar files of JSTL 1.2 implementations. The jar files are available in dev.java.net.

http://www.mularien.com/blog/2008/04/24/how-to-reference-and-use-jstl-in-your-web-application/
http://www.mularien.com/blog/2008/02/19/tutorial-how-to-set-up-tomcat-6-to-work-with-jstl-12/
http://docs.oracle.com/javaee/5/tutorial/doc/bnake.html