Ralph E. Johnson

Designing reusable classes

Object-oriented programming is as much a different way of designing programs as it is a different way of designing programming languages. This paper describes what it is like to...

A refactoring tool for smalltalk

Refactoring is an important part of the evolution of reusable software and frameworks. Its uses range from the seemingly trivial, such as renaming program elements, to the profo...

Creating abstract superclasses by refactoring

This paper focuses on object-oriented programming and one kind of structure-improving transformation (refactoring) that is unique to object-oriented programming: finding abstrac...

Refactoring and aggregation

Beyond the hype (panel)

Patterns and frameworks are two approaches to the development of both new and evolving software systems. An implicit hypothesis is that are reduced by leveraging knowledge pre...

Design Patterns: Elements of Reusable Object-Oriented Software

The book is an introduction to the idea of design patterns in software engineering, and a catalog of twenty-three common patterns. The nice thing is, most experienced OOP design...