OBJECT-ORIENTED METHODS (A New Comprehensive Study). This is the Third Edition of the series with detailed updated topics. This textbook is a comprehensive, modern and resourceful textbook for both undergraduate and graduate students. This textbook introduces the student to the basic concepts of object-oriented Methodologies, Analysis and Design in clearer and simpler detail. Topics like Use case modeling, class modeling and state modeling using common notations are covered with clear simplicity. The book also demonstrated the use of the concepts of abstraction, encapsulation, inheritance and aggregation in software design and development, the role of use cases in software development, the role of polymorphism and dynamic binding, how to determine suitable objects/classes and their relationships and different class diagrams are included.