Hi Friend,

Try this:

import java.util.*;
interface MathClass<T extends Number> {
T add(T a, T b);
}
class GenericExample implements MathClass<Integer> {
    public Integer add(Integer a, Integer b) {
        return a +b;
    }
public static void main(String[]args){
GenericExample g=new GenericExample();
Scanner input=new Scanner(System.in);
System.out.print("Enter number1: ");
int num1=input.nextInt();
System.out.print("Enter number2: ");
int num2=input.nextInt();
System.out.println("Result is: "+(g.add(num1,num2)));
}
}

Thanks