Inheritance in java

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

class Arithmetic {

}
class Adder extends Arithmetic {
    public int add(int a, int b) 
    {
        return a+b;
    }
}

Source: hackerrank.com

Inheritance in Java

Java Inheritance (Subclass and Superclass)
In Java, it is possible to inherit attributes and methods from one class to another. We group the "inheritance concept" into two categories:

subclass (child) - the class that inherits from another class
superclass (parent) - the class being inherited from
To inherit from a class, use the extends keyword.

Inheritance in java

class Arithmetic {
    Arithmetic() {}
}

class Adder extends Arithmetic {
    Adder() {}
    
    int add(int a, int b) {
        return a + b;
    }
}

-1

Source: hackerrank.com

Inheritance in java

class Arithmetic {
    Arithmetic() {}
    
    int add(int a, int b) {
        return a + b;
    }
}

class Adder extends Arithmetic {
    Adder() {}
}

-1

Source: hackerrank.com

Inheritance in java

it is used to define relationship between two class, 
which a child class occurs all the properties and
  behaviours of a parent class. 
Provides code reusability.
Ex: in my framework I have a TestBase 
class which I store 
all my reusable code and methods.
  My test execution classes and 
elements classes will extend the 
TestBase in order to reuse the code.

-1

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