Question
If x is an object of class A, and y is an object of a class B that is a subclass of A, after the
If x is an object of class A, and y is an object of a class B that is a subclass of A, after the assignment x = y, why is x.m() illegal when m is a method of B but not A?
Some have claimed that deep inheritance hierarchies make system maintenance more difficult, not easier. Explain how that could be true.
If x is an object of class A, and y is an object of a class B that is a subclass of A, after the assignment x = y, why is x.m() illegal when m is a method of B but not A?
Some have claimed that deep inheritance hierarchies make system maintenance more difficult, not easier. Explain how that could be true.
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Management Accounting Information for Decision-Making and Strategy Execution
Authors: Anthony A. Atkinson, Robert S. Kaplan, Ella Mae Matsumura, S. Mark Young
6th Edition
137024975, 978-0137024971
