Transforming inheritance into composition

Transforming Inherintance into Composition is a reengineering pattern describing a solution to a recurring reengineering problem. The problem is that transforming an inheritance relationship into a component relationship using delegation without a ecting correctness and functionality of systems is a time-consuming and error-prone task. Solving this problem leads to more exible and more comprehensible systems. The problem is recurring, because cases of misuse of inheritance are very common in almost every object-oriented system. Solving the problem is time-consuming and errorprone because the necessary changes possibly a ect the whole system and thus cannot be performed locally.