Section 7.2 Servlet 2.5 and JSP 2.1
p<>.Jetty 6 implements the 2.5 servlet specification. There is nothing revolutionary in this update of the API and mostly represents API cleanups and corrections. The upgrade to JSP 2.1 is slightly more significant as this requires JAVA 1.5 (hence jetty retains JSP 2.0 as an option).
Renaming of classes and packages
Jetty 6 took the opportunity to clean up the package hierarchy and to remove some long deprecated methods. Several classes and packages have been renamed:
Commons logging has been removed. Currently, Jetty has no hard dependency on any logging mechanism. If an SLF4J jar is found, it will be used. Otherwise, any logging is simply sent to stderr .