OOP Inheritance

What is a group of objects which have common propertie and a template or blueprint from which objects are created?

Class: A class is a group of objects which have common properties. It is a template or blueprint from which objects are created.

2 Advantages of Inheritance

For Method Overriding (so runtime polymorphism can be achieved). For Code Reusability.

Inheritance in Java is a mechanism in which one object acquires all the properties and behaviors of a parent object. It is an important part of OOPs (Object Oriented programming system).

Inheritance in Java is a mechanism in which one object acquires all the properties and behaviors of a parent object. It is an important part of OOPs (Object Oriented programming system).

Inheritance represents the IS-A relationship which is also known as a parent-child relationship.

Inheritance represents the IS-A relationship which is also known as a parent-child relationship.

What is another name for superclass?

It is also called a base class or a parent class.

What are other names for sub class?

It is also called a derived class, extended class, or child class.

Programmer is the subclass and Employee is the superclass. The relationship between the two classes is Programmer IS-A Employee. It means that Programmer is a type of Employee.

Programmer is the subclass and Employee is the superclass. The relationship between the two classes is Programmer IS-A Employee. It means that Programmer is a type of Employee.

Define Reusability

Reusability: As the name specifies, reusability is a mechanism which facilitates you to reuse the fields and methods of the existing class when you create a new class. You can use the same fields and methods already defined in the previous class.

What is a class which inherits the other class.

Sub Class/Child Class: Subclass is a class which inherits the other class. It is also called a derived class, extended class, or child class.

What is a Super Class/Parent Class?

Super Class/Parent Class: Superclass is the class from where a subclass inherits the features. It is also called a base class or a parent class.

What does extends keyword indicate?

The extends keyword indicates that you are making a new class that derives from an existing class. The meaning of "extends" is to increase the functionality.

The idea behind inheritance in Java is that you can create new classes that are built upon existing classes. When you inherit from an existing class, you can reuse methods and fields of the parent class. Moreover, you can add new methods and fields in your current class also.

The idea behind inheritance in Java is that you can create new classes that are built upon existing classes. When you inherit from an existing class, you can reuse methods and fields of the parent class. Moreover, you can add new methods and fields in your current class also.

What be three types of inheritance in java?

there can be three types of inheritance in java: single, multilevel and hierarchical.