## Hackerrank Java Inheritance II Solution

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Write the following code in your editor below:

- A class named
*Arithmetic*with a method named*add*that takes integers as parameters and returns an integer denoting their sum. - A class named
*Adder*that inherits from a superclass named*Arithmetic*.

Your classes should not be be .

**Input Format**

You are not responsible for reading any input from stdin; a locked code stub will test your submission by calling the *add* method on an *Adder* object and passing it integer parameters.

**Output Format**

You are not responsible for printing anything to stdout. Your *add* method must return the sum of its parameters.

**Sample Output**

The *main* method in the *Solution* class above should print the following:

```
My superclass is: Arithmetic
42 13 20
```

### Solution in java8

**Approach 1**.

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

**Approach 2**.

```
//Write your code here
class Arithmetic {
public int add(int a, int b) {
return a + b;
}
}
class Adder extends Arithmetic {
}
```

**Approach 3**.

```
//Write your code here
class Arithmetic{
public int add(int x,int y){
return x+y;
}
}
class Adder extends Arithmetic{
}
```