An object of one class act as a Data member of another class. If a class has a reference of another class (also known as contained object, or entity reference), i.e. known as has-a relationship.
Read moreWhy super class is used in Java?
The super keyword in Java is a reference variable which is used to refer immediate parent class object . Whenever you create the instance of subclass, an instance of parent class is created implicitly which is referred by super reference variable. 1. super can be used to refer immediate parent class instance variable.
Read moreWhat is meant by super class?
Definition of superclass : a category in biological classification ranking below a phylum or division and above a class .
Read moreWhat is class with example in Java?
Everything in Java is associated with classes and objects, along with its attributes and methods. For example: in real life, a car is an object. The car has attributes, such as weight and color, and methods, such as drive and brake. A Class is like an object constructor, or a “blueprint” for creating objects .
Read moreWhat is multilevel inheritance inheritance?
The multi-level inheritance includes the involvement of at least two or more than two classes . One class inherits the features from a parent class and the newly created sub-class becomes the base class for another new class.30 Haz 2021
Read moreWhat is multiple and multilevel inheritance with example?
Multiple Inheritance is an Inheritance type where a class inherits from more than one base class. Multilevel Inheritance is an Inheritance type that inherits from a derived class, making that derived class a base class for a new class. Multiple Inheritance is not widely used because it makes the system more complex.
Read moreWhat are the attributes of a class?
Class attributes are attributes which are owned by the class itself . They will be shared by all the instances of the class. Therefore they have the same value for every instance. We define class attributes outside all the methods, usually they are placed at the top, right below the class header.
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