Object Oriented Programming Questions Long
In Object Oriented Programming, the 'super' keyword is used to refer to the immediate parent class of a subclass. It is primarily used to access or call the methods and variables of the parent class from within the subclass.
The 'super' keyword is particularly useful in scenarios where both the parent and child classes have methods or variables with the same name. By using 'super', we can differentiate between the two and explicitly refer to the parent class version.
The 'super' keyword can be used in two ways:
1. To call the parent class constructor: When creating an object of the subclass, the 'super' keyword can be used to invoke the constructor of the parent class. This is done to initialize the inherited variables or perform any necessary setup in the parent class before the subclass object is created.
2. To call the parent class methods or access variables: Within the subclass, the 'super' keyword can be used to call the methods or access the variables of the parent class. This allows us to extend the functionality of the parent class by adding additional behavior or modifications in the subclass, while still utilizing the existing functionality of the parent class.
By using 'super', we can achieve method overriding, where a subclass provides its own implementation of a method that is already defined in the parent class. In such cases, the 'super' keyword can be used to call the parent class method from within the overridden method, ensuring that both the parent and child class versions are executed.
Overall, the 'super' keyword plays a crucial role in maintaining the hierarchy and relationship between classes in Object Oriented Programming, allowing for code reusability, extensibility, and flexibility in designing complex systems.