Mastering Java: The Ultimate 2026 All-In-One Quiz to Excel in 'Thinking in Java

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What is inheritance used for in object-oriented programming?

To create a new class by adding new methods or overriding existing ones

Inheritance is used in object-oriented programming to create a new class that inherits the properties and methods of an existing class. This allows for code reusability and makes it easier to make changes to the parent class without having to modify each individual child class. Option B is incorrect because interfaces are used for ensuring classes have certain methods, not inheritance. Option C is incorrect because inheritance is meant to avoid duplicating code. Option D is incorrect because inheritance does not have any direct impact on the execution speed of a program.

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To ensure all classes follow the same interface

To duplicate classes without modification

To facilitate faster execution of program code

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