GRASP – A Methodical Approach to Basic Object-Oriented Design

Applying UML and Patterns – An Introduction to Object-Oriented Analysis and Design and Iterative Development by Craig Larman introduced me to GRASP.  GRASP stands for General Responsibility Assignment Software Patterns.


GRASP consists of 9 Patterns that help you with the fundamental aspect of OO Design, which is assigning responsibilities to objects.  The nine GRASP patterns are:



If you haven’t purchased the 3rd edition of Applying UML and Patterns by Craig Larman (Amazon), I highly recommend it.  It is an unbelievably easy-to-read and informative book on object-oriented design and iterative development.  It is hands-down the best development book I purchased in 2004.


Over the next couple of weeks, I am going to introduce the nine GRASP Patterns as discussed in Craig Larman’s book.  Craig does such an awesome job defining the patterns that I will admittedly steal his definitions from the book.  However, I will provide a number of original code examples to help clarify real-world use of the patterns and give him credit where credit is due.

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