Refactoring the Unit Test
As an aside, we should mention that the DrawingPanel class was born out of a first attempt at a RubberbandTest applet, in the manner described below.
The object-oriented design process is an iterative one.[1] Classes are written, and as other classes are added to a system, insights are gained which often result in existing classes being refactored, meaning their implementations are modified to some degree according to a number of criteria. criterion. One of the mainstays of refactoring is to identify basic abstractions that can may be shared among a number of different classes in the midst of specialized pieces of functionality. When such code is identified, it is separated from the specialized code and packaged into ...
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