Object-Oriented Programming

This book describes a practical approach to object-oriented
programming and design. After explaining the basic concepts
of object-orientation the book shows with numerous realistic
examples how this technique can be used to write extensible
and well-structured software. It discussed typical design
patterns and shows implementation techniques for frequently
occurring problems to be solved with object-oriented
programming. Object-oriented programming is programming in
the large. Although it is possible to explain the basic
concepts withsmall examples it is necessary to study large
and realistic applications in order to understand the power
and elegance of this new technique. Therefore the book
contains the design and full source code of a realistic case
study - a window system with extensible text and graphics
editors. The programming language used in this book is
Oberon-2, the latest offspringof the Pascal and Modula-2
family of languages developed at ETH Z}rich. Besides
satisfying the principle requirements of modern software
such asstrong type checking, modularity and
object-orientedness one of the major advantages of this
language is its simplicity. Anyone who understands Pascal
can also read Oberon-2 programs. Compilers for Oberon-2 as
well as the source code of the case study in this book are
freely available from ETH.