Mastering Java: The Ultimate Quiz for 'Thinking in Java'

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Dive into the depths of Java with our quiz based on "Thinking in Java, Fourth Edition" by Bruce Eckel. Test your knowledge, solidify concepts, and prepare for certification with challenging questions and insightful feedback.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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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
To ensure all classes follow the same interface
To duplicate classes without modification
To facilitate faster execution of program code

The correct answer is: 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.