This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Hello. If you want the sources for Servlet API, you shuld go to http://tomcat.apache.org/download-60.cgi and download the Source Code Distributions. Tomcat versions came along with a certain version of Servlet API and JSP Spec Servlet/JSP Spec Apache Tomcat version 2.5/2.1 6.0.x 2.4/2.0 5.5.x 2.3/1.2 4.1.x 2.2/1.1 3.3.x (archived) so download the sources for your tomcat implementation and you'll be able to see or debug in the javax.servlet.* classes as well.