Design Patterns Java™ Workbook

The Organization of This Book

There are many ways to organize and to categorize patterns. You might organize them according to similarities in structure, or you might follow the order in Design Patterns. But the most important aspect of any pattern is its intent, that is, the potential value of applying the pattern. This book organizes the 23 patterns of Design Patterns according to their intent.

Having decided to organize patterns by intent raises the question of how to categorize intent. This book adopts the notion that the intent of a design pattern is usually easily expressed as the need to go beyond the ordinary facilities that are built into Java. For example, Java has plentiful support for defining the interfaces that a class implements. ...