import java.util.*;

abstract class Arithmetic

{

int a,b;

```
abstract void calc();
```

}

class Add extends Arithmetic

{

void calc()

```
{
System.out.println("The sum is " + (a+b));
}
```

}

class Sub extends Arithmetic

{

void calc()

```
{
System.out.println("The difference is " + (a-b));
}
```

}

class Abst

{

public static void main (String args[])

```
{
System.out.println("Enter any Two numbers : ");
Scanner sc = new Scanner(System.in);
int a = sc.nextInt();
int b = sc.nextInt();
Add obj1 = new Add();
obj1.calc();
Sub obj2 = new Sub();
obj2.calc();
}
```

}