What is inheritance in Java?

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Rahul Roi · Answer

Inheritance;-and 
Types of Inheritance:-
Inheritance;- 
When one class is derived from another class. In other words when one object (child) holds all the properties of another object (parent) is called inheritance.
extend keyword is used to derive the class properties. 
A term used in Inheritance concepts:- 
Subclass (child class):- it is a class that inherits another class. It is also called “derived class”.
Superclass (parent class):- it is also class from where derived class inherits the property.
Types of Inheritance:- 
1) Single inheritance:- 
Example- 
class Fruits{
and  and  void M1()
and and and and {
and  and  and  and  System.out.println(andquot;M1andquot;);
and  and  }
}
class Mango extends Fruits
{
and and and and void M2()and and and and and and and and     {
and  and  System.out.println(andquot;M2andquot;);
    }}
class Mask{and and and and   and public static void main(String args[])
   {
    Mango m=new Mango();
    m.M1();
    m.M2(); 
   }
}
Output-       M1       M2
2) Multilevel Inheritance:-
and  and  and 
Example-and 
class Multilevel
{
and  and  void M1()
and  and  {
and  and and   System.out.println(andquot;M1andquot;);
and  and  }
}
class child1 extends Multilevel
{
and  and  void M2(){
and  and  and  and  System.out.println(andquot;M2andquot;);
and  and     }
and }
class child2 extends child1{
and  and  void M3(){
and  and  and  and  System.out.println(andquot;M3andquot;);
and  and       }
}
class child3 extends child2{
and  and  void M4(){
and  and  and  and  System.out.println(andquot;M4andquot;);
    and  and  }
}
class More{
and  and  public static void main(String[] args) {
and  and  and  and  child3 c=new child3();
and  and  and  and  c.M3();
and  and  and  and  c.M2();
and  and  and  and  c.M1();
and  and  and  and  c.M4();
and  and  }
Output-
       M3       M2       M1       M4
3)Multiple Inheritance:-
4) Hierarchical Inheritance:-
Example-and 
 class Flowers{  
void M1()
  {
and  and  System.out.println(andquot;M1andquot;);
   }  
}  
  class Dog extends Flowers{  
    void M2()
   {
and  and  System.out.println(andquot;M2andquot;);}  
    }  
  class Cat extends Flowers{  
    void M3()
  {
and  and  System.out.println(andquot;M3andquot;);}  
 }  
 class Dav
  {      public static void main(String args[])    {    Cat c=new Cat();    c.M3();    c.M1();    Dog d=new Dog();  d.M2();  d.M1();   }} Output-     M3     M1     M2     M1
5) Hybrid Interface:-

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What is inheritance in Java?

Nitin Kushwaha

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