Very very useful URLs/Links for tutorials

Design pattern:-
http://www.javacamp.org/designPattern/


Spring web application sites:-
http://www.techfaq360.com/tutorial/spring/springwebapp.jsp
http://www.techfaq360.com/tutorial/spring/springsecond.jsp
http://www.techfaq360.com/tutorial/spring/springvalidation.jsp
http://www.techfaq360.com/tutorial/spring/struts_spring_hibernate.jsp

Spring with ACEGI/CAS form based security:-
http://www.tfo-eservices.eu/wb_tutorials/media/SpringAcegiTutorial/HTML/SpringAcegiTutorial-1_1-html.html?wb_session_id=6085175978eb26edcd0a9d90a99ca42a

Think tank tutorial:-
http://sharat.wordpress.com/

Running multiple instances in JBOSS:-
http://manoharviswanathan.com/blog/tech/running-multiple-jboss-instances-on-the-same-machine/

Implementation of License management in a Application:
http://manoharviswanathan.com/blog/tech/licence-management-for-java-web-applications-using-aspects/

How ProGuard works(ProGuard is a Java class file shrinker, optimizer, obfuscator, and preverifier):-
http://community.decisci.com/node/64

Java Tutorials:-
http://www.indijava.in/community/tutorials