Topic 7.1: Working with Inheritance - Describe inheritance and its benefits Flashcards
The requirements for this are that the subclass method must have the same method signature (name, return type, and parameter types) as the method in the superclass.
What are the requirements for method overriding?
Are private methods in the superclass inherited by the subclass?
No, private methods in the superclass are not inherited and cannot be accessed directly by the subclass.
What does a subclass inherit from its superclass in Java?
This inherits all the accessible fields and methods (public and protected) from its superclass.
How can a subclass access private fields of its superclass?
A subclass can access these through public or protected methods of the superclass (if available).
A subclass can access these through public or protected methods of the superclass (if available).
How can a subclass access private fields of its superclass?
What is method overriding in Java?
This allows subclasses to provide their own implementation for a method defined in the superclass, thereby overriding the original behavior.
What are the requirements for method overriding?
The requirements for this are that the subclass method must have the same method signature (name, return type, and parameter types) as the method in the superclass.
What is one of the benefits of inheritance in Java related to code organization and reuse?
Code Reusability - Inheritance allows the reuse of code from the superclass in the subclass, reducing duplication and promoting a modular approach.
How does inheritance contribute to organizing classes in Java?
Hierarchical Structure - Inheritance allows the creation of class hierarchies, organizing classes based on their relationships.
This inherits all the accessible fields and methods (public and protected) from its superclass.
What does a subclass inherit from its superclass in Java?
How can a subclass use private methods of its superclass?
A subclass can use public or protected methods of the superclass to indirectly access and invoke the private methods of the superclass.
What is inheritance
This is a fundamental concept in object-oriented programming where a class (subclass) can inherit properties (fields and methods) from another class (superclass or parent class).
How do you declare a subclass in Java?
To create a subclass, use the “extends” keyword in the class declaration, followed by the name of the superclass. For example:
class SubClass extends SuperClass
{ ... }
How does a subclass handle private fields of its superclass?
A subclass cannot directly access private fields of its superclass, but it can use getter and setter methods to interact with these fields indirectly.
What is the purpose of the @Override annotation in method overriding?
The @Override annotation (optional but recommended) is used to indicate that a method in the subclass is intended to override a method from the superclass. It helps catch potential issues during compilation and improves code readability.
