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Inheritanceallowsdeveloperstocreatederivedclassesthatreusecodedeclaredalready in a base class.
Avoiding the duplication of common functionality between several classes by building an inheritance hierarchy to contain the classes can save developers a considerable amount of time.
Similarly, placing common functionality in a single base class, rather than duplicating the code in multiple unrelated classes, helps pre- vent the same errors from appearing in multiple source-code files.
If several classes each contain duplicate code containing an error, the software developer has to spend time correcting each source-code file with the error.
However, if these classes take ad- vantage of inheritance, and the error occurs in the common functionality of the base class, the software developer needs to modify only the base class’s code.