Aspect Oriented Programming and how is it related with Spring?

Aspect Oriented Programming(AOP) is a paradigm of developmental approach which is based on:-separation of concerns encompasses breaking down a program in parts which overlap in functionality as little as possible.-cross-cutting concerns is how modules,classes,procedures intersect each other and defy concern like encapsulation-advancement in modularization.An AOP language consists of crosscutting expressions that encapsulate the concern in one place. AspectJ has a number of such expressions and encapsulates them in a special class, an aspect.An aspect can-change the behavior of the base code (the non-aspect part of a program) by applying advice(additional behavior) at various joint points (points in a program) specified by query called a point cut (that detects whether a given join point matches).-make structural changes to other classes, like adding members or parents.Spring implements AOP using -dynamic proxies (where an interface exists) or-CGLIB byte code generation at runtime (which enables proxying of classes). It works well in any application server and standalone environment so there is no vebdor dependency.-Spring can use AOP for declarative transaction management eliminating the need of EJB conatiner or JTA for achieving the same.-Spring AOP supports method interception and both stateful (one instance per advised object) and stateless interceptors (one instance for all advice).-Spring AOP can be used to implement application-specific aspects also.It all depends upon how much comfortable you are with Aspect concepts rather Spring AOP capabilities.-Spring AOP integrates transparently with the Spring BeanFactory concept.