What is inheritance?

Question

BlackTom AI · Accepted Answer

Question: What is inheritance?

Option 1: The ability to create a new class from an existing class
- This is the standard definition of inheritance in object-oriented programming. It describes deriving a new class (a subclass or child class) from an existing class (a superclass or parent class), thereby gaining its attributes and behaviors and enabling extension or specialization.

Option 2: The practice of encapsulating data and behavior into a single unit
- This describes encapsulation, not inheritance. Encapsulation is about bundling data and methods and restricting access to the internal state, often through access modifiers or properties.

Option 3: The process of copying attributes and methods from one object to another
- This sounds like manual cloning or copying, which is not the formal definition of inheritance. Inheritance is about class-based hierarchy and automatic propagation of members, not ad-hoc copying.

Option 4: A technique to optimise and speed-up code
- Inheritance is not primarily about performance optimization. While it can influence design efficiency, its core purpose is to model hierarchical relationships and reuse code, not to accelerate execution.

In summary, option 1 correctly identifies inheritance as creating a new class from an existing class, enabling reuse and specialization of fields and behaviors. The other options describe related concepts (encapsulation), or mischaracterize inheritance as cloning or performance optimization.

What is inheritance?单项选择题

类似问题

You are given the following abstract class: And the following subclasses: and: Now if we run the following code and the user types in 'O', what is printed by the last call to System.out.println(...):

Consider the following inheritance hierarchy: If we run the following code, what is printed to the screen?

Question at position 8 What concept in object-oriented programming allows creating new classes that reuse code from existing classes?StaticGlobalInheritanceEncapsulationClear my selection

Base classes are also called

When a class inherits another class, it is required to use all the data attributes and methods of the superclass.

A superclass inherits attributes and methods from its subclasses without any of them having to be rewritten.

What does super() do in Python classes?

What does the following code output?

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