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Inhertance in Java

The document provides an overview of inheritance in Java, explaining its significance in Object-Oriented Programming (OOP) and detailing three types: single inheritance, multi-level inheritance, and hierarchical inheritance. Each type is defined with accompanying syntax and examples to illustrate how classes can inherit properties and methods from one another. The content emphasizes the benefits of inheritance, such as code reusability and organization.

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22211a05l5
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29 views11 pages

Inhertance in Java

The document provides an overview of inheritance in Java, explaining its significance in Object-Oriented Programming (OOP) and detailing three types: single inheritance, multi-level inheritance, and hierarchical inheritance. Each type is defined with accompanying syntax and examples to illustrate how classes can inherit properties and methods from one another. The content emphasizes the benefits of inheritance, such as code reusability and organization.

Uploaded by

22211a05l5
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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INHERITANCE IN

JAVA
Nipun Lingadally-22211A05L5
Agenda
INTRODUCTION

TYPES OF INHERITANCE

SINGLE INHERITANCE

MULTI-LEVEL INHERITANCE

HIERARCHICAL INHERITANCE
Introduction
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 is a fundamental concept in Java


where a class can inherit properties (methods
and fields) from another class.

It promotes code reusability, reduces


redundancy, and enhances code organization
Types of Inheritance

Hierarchical
Single Multi-level
Inheritance
Inheritance Inheritance
Multiple subclasses
A subclass inherits from A subclass inherits from
inherit from a single
only one superclass. another subclass.
superclass.
Definition
When a class inherits another class, it is known as a
single inheritance. In the example given below, Dog class
inherits the Animal class, so there is the single
inheritance.

Single Syntax
class Super {

Inheritance }
// properties and methods

class Sub extends Super {


// properties and methods
}
OUTPUT:
Example eating....
class Animal{ barking....
void eat(){
System.out.println("eating...");
}
}
class Dog extends Animal{
void bark(){
System.out.println("barking...");
}
}
class TestInheritance{
public static void main(String[] args){
Dog d=new Dog();
d.bark();
d.eat();
}
}
Definition
When there is a chain of inheritance, it is known as
multilevel inheritance. As you can see in the example
given below, BabyDog class inherits the Dog class which
again inherits the Animal class, so there is a multilevel
inheritance.

Multi-level Syntax
class Super1 {

Inheritance }
// properties and methods

class Super2 extends Super1 {


// properties and methods
} class Sub extends Super2 {
// properties and methods
}
Example OUTPUT:
eating....
class Animal{ barking....
void eat(){ weeping....
System.out.println("eating...");
} }
class Dog extends Animal{
void bark(){
System.out.println("barking...");
} }
class BabyDog extends Dog{
void weep(){
System.out.println("weeping...");
} }
class TestInheritance2{
public static void main(String[] args){
BabyDog d=new BabyDog();
d.weep();
d.bark();
d.eat();
} }
Definition
When two or more classes inherits a single class, it is
known as hierarchical inheritance. In the example given
below, Dog and Cat classes inherits the Animal class, so
there is hierarchical inheritance.

Hierarchical Syntax
class Super {
// properties and methods

Inheritance }
class Sub1 extends Super {
// properties and methods
}
class Sub2 extends Super {
// properties and methods
}
Example OUTPUT:
eating....
barking....
class Animal{
meowing....
void eat(){
System.out.println("eating...");
} }
class Dog extends Animal{
void bark(){
System.out.println("barking...");
} }
class Cat extends Animal{
void meow(){
System.out.println("meowing...");
} }
class TestInheritance3{
public static void main(String args[]){
Cat c=new Cat();
c.meow();
c.eat();
}}
Thank You

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