This keyword prevents other classes from inheriting from it. 1 pointsubclasssuperclassfinalcountdowninherit
Question
This keyword prevents other classes from inheriting from it.
- 1 point
- subclass
- superclass
- final
- countdown
- inherit
Solution
The keyword that prevents other classes from inheriting from it is final.
In object-oriented programming, the concept of inheritance allows one class (subclass) to inherit the properties and methods of another class (superclass). However, there are scenarios where it is beneficial to prevent further inheritance from a class to maintain its integrity and restrict modification. The final
keyword serves this purpose.
When you declare a class as final
, it signals to the compiler and other developers that this class cannot be subclassed. For example:
final class BaseClass {
// class implementation
}
In this case, if someone attempts to create a subclass from BaseClass
, the compiler will throw an error, indicating that it cannot be extended. This is particularly useful for classes that provide essential functionality that should not be altered, thus ensuring a stable and predictable codebase.
In summary, using the final
keyword helps to create design constraints that enhance the maintainability and stability of the code in object-oriented development.
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