Hi Friend,

Try the following code:

interface Operations{
    public void add(int a,int b);
    public void subtract(int a,int b);
    public void multiply(int a,int b);
    public void divide(int a,int b);

}
class Calculation implements Operations{
    public void add(int a,int b){
        System.out.println(a+b);
    }
    public void subtract(int a,int b){
        if(a>b){
        System.out.println(a-b);
        }
        else{
        System.out.println(b-a);
        }
    }
    public void multiply(int a,int b){
        System.out.println(a*b);
    }
    public void divide(int a,int b){
        if(a>b){
        System.out.println(a/b);
        }
        else{
        System.out.println(b/a);
        }
        }
}
public class Test{
    public static void main(String []args){
        Calculation cal=new Calculation();
        cal.add(5,10);
        cal.subtract(5,10);
        cal.multiply(5,10);
        cal.divide(5,10);
    }
}

Thanks