The proverb "owning a hammer doesn't make one an architect" is especially true with respect to object technology. Knowing an object-oriented language (such as Java) is a necessary but insufficient first step to create object systems. Knowing how to "think in objects" is also critical.
This is an introduction to OOA/D while applying the Unified Modeling Language (UML), patterns, and the Unified Process. It is not meant as an advanced text; it emphasizes mastery of the fundamentals, such as how to assign responsibilities to objects, frequently used UML notation, and common design patterns. At the same time, primarily in later chapters, the material progresses to a few intermediate-level topics, such as framework design.
