Aspect Oriented Programming (AOP) is one of the hottest research areas in the development of information technology during these years. It is the next level of Object-Oriented Programming Paradigms. People have found many programming problems for which the traditional Object- Oriented Programming (OOP) model is not sufficient to clearly capture some of the important design decisions the program must implement. This problem is much more obvious in Pervasive Computing Environment due to the variety of environment. This book is an introduction to a new paradigm i.e. Aspect-Oriented Programming, a programming technique that makes it possible to express those programs that OOP fail to support. This book also includes an introduction to AOP Complier, matrices etc.