This book is intended for programmers who know the basics of programming with Java, and now want to understand the fundamentals of object-oriented software development. If you're fairly new to programming, and have had a class or two in Java, you're probably starting to feel comfortable ...
OBJECT SPECIFICATION object-name SERVICES ... END SPECIFICATION. verbal or graphical description e.g. PDL, Flow Diag., Block Diag. will be refined and extended in design check with scenarios!