Chapter 11: Problem 9

If a method in a subclass has the same name as a method in the superclass, but uses a different parameter list, does the subclass method overload or override the superclass method?

Short Answer

Expert verified

Answer: The method in the subclass overloads the method in the superclass.

Step by step solution

Understand method overriding

Method overriding occurs when a subclass provides a new implementation for a method that is already defined in its superclass. The new implementation in the subclass has the same method name, return type, and parameters as the method in the superclass. The purpose of method overriding is to achieve dynamic polymorphism and modify the behavior of the superclass method according to the subclass.

Understand method overloading

Method overloading is when you define two or more methods within the same class that have the same name but a different number of parameters, types of parameters, or order of parameters. Method overloading allows multiple methods with similar functionality to be given the same name, making the code more readable and easier to maintain.

Determine if the method in the subclass overrides or overloads the superclass method

Given that the method in the subclass has the same name as a method in the superclass, but uses a different parameter list, the method in the subclass is overloading the method in the superclass.

Conclusion

In this scenario, the subclass method overloads the superclass method, as it has the same name but a different parameter list. Method overriding requires the subclass method to have the same name, return type, and parameters as the method in the superclass, whereas method overloading occurs when two or more methods within the same class or its hierarchy share the same name but have different parameter lists.

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If a method in a subclass has the same name as a method in the superclass, but uses a different parameter list, does the subclass method overload or override the superclass method?

Short Answer

Step by step solution

Understand method overriding

Understand method overloading

Determine if the method in the subclass overrides or overloads the superclass method

Conclusion

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