Some useful links

Spring Tutorial http://www.javabeat.net/spring-tutorials/ Struts2 http://www.tutorialspoint.com/struts_2/struts_quick_guide.htm Dinesh on Java http://www.dineshonjava.com J2EE Patterns http://www.corej2eepatterns.com/ServiceActivator.htm Hadoop for Windows http://www.codeproject.com/Articles/757934/Apache-Hadoop-for-Windows-Platform (Beware: the downloads in this link don't work)