AOP example in spring

http://veerasundar.com/blog/2009/04/aspect-oriented-programming-using-spring-aop-an-introduction/
http://veerasundar.com/blog/2009/04/aspect-oriented-programming-using-spring-aop-an-introduction-part-2/

http://sivalabs.blogspot.com/2011/01/aspect-oriented-programming-using.html