Can you call a method of a grandparent class?
You cannot directly access grandparent methods by overriding parent methods. The interesting question is: why? The reason lies in the principles of object orientation. When you extend a class, you extend the defined functionality of the class.
Table of Contents
How do you access the method of the main class?
Super keyword in Java
- Using super with variables: This scenario occurs when a derived class and a base class have the same data members.
- Using super with methods: This is used when we want to call the method of the parent class.
- Using super with constructors: The super keyword can also be used to access the constructor of the main class.
Is it possible to override any method of the main class?
Private, static and final methods cannot be overridden as they are local to the class. However, static methods can be re-declared in the subclass; in this case, the subclass method would act differently and would have nothing to do with the same static method of the main class.
How do you override a parent class constructor?
No, we can’t override the constructor. A constructor is a special class member function with the same name as the class name. Its main purpose is to initialize the data members of the class instance.
Can you call a grandparent method in Java?
In Java, a class cannot directly access the members of the grandparents. However, it is allowed in C++. In C++, we can use the scope resolution operator (::) to access any ancestor member in the inheritance hierarchy. In Java, we can access the grandparent members only through the parent class.
Is it possible to access grandparents member in Java?
There is an error in the line “super.super.print();”. In Java, a class cannot directly access the members of the grandparents. However, it is allowed in C++. In C++, we can use the scope resolution operator (::) to access any ancestor member in the inheritance hierarchy.
How do you derive a child class from a parent class?
But essentially, you have one class as the parent class (called the superclass) and another class as the child of the parent (the subclass). The child class is said to be derived from the parent class. However, the reason for having a child class is to keep the information separate.
How do you derive one class from another in Java?
A class is derived from another, inherits all its data and methods Terminology superclass, base class, parent class subclass, derived class, child class. Also called extended class in Java Inheritance in Java Use the extends keyword to declare the derived class