: Finally, strive for a reusable design. This involves breaking big problems into smaller functional pieces that can be managed independently. Core OOA&D Principles in Action
The book moves beyond definitions and shows you why principles matter through real-world case studies, such as building an inventory system for a guitar store or a high-tech dog door. Head First Object-Oriented Analysis & Design
: First, ensure the software actually does what the client wants. At this stage, don't worry about perfect design—just get the functionality right so you know you're building the correct product. : Finally, strive for a reusable design