4.0.0 sun-servlet servlet-api 2.4 Tomcat 5.5 servlet 2.4 spec api classes http://jakarta.apache.org/tomcat/index.html apache-2.0 http://www.apache.org/licenses/LICENSE-2.0 javax.servlet servlet-api http://maven.apache.org/guides/mini/guide-coping-with-sun-jars.html