Inheritance in java

Programming in Java

Object Oriented in Java

Advanced topics in Java

Inheritance we can say is the (super-sub) or (parent-child) or (base-derived) class relationship.

Inheritance is the main feature of object oriented programming through which the sub class inherits the features of its base class.

Types of Inheritance

1. Single Inheritance :

If a class inherits the features of another class, then it is known as single inheritance.

In java, a class inherits another class with the keyword ‘extends’.

class A
{
  int i;
}
 class B extends A //how class inherits another class.
 {
   int j;
   // now this class automatically has i inherited variable.
 }

2. Hierarchical Inheritance :

In this type of inheritance, multiple classes inherit the same class.

class A
{
}
class B extends A
{
}
class C extends A
{
}

3. Multilevel Inheritance :

Multilevel inheritance can be understand with the below example.

class A 
{
}
class B extends A 
{
}
class C extends B 
{
}

In the above example, class C inherits A but not directly, it inherits through B class.

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