import java.util.*;

public class Calculator{
  private int a;
  private int b;
  Calculator(int a , int b){
    this.a = a ;
    this.b = b;
  }
  public int sum(){
    return a+b;
  }
  public int sub(){
    return a-b;
  }
  public int mul(){
    return a*b;
  }
  public int div(){
   return a/b;
  }
  public void show(){
     System.out.println("Sum of " + a +" & " + b + " is :" + sum());
     System.out.println("Difference of " + a +" & " + b + " is :" + sub());
     System.out.println("Multiplication of " + a +" & " + b + " is :" + mul());
     System.out.println("Division of " + a +" & " + b + " is :" + div());
  }
  public static void main(String[] args){
    Calculator cal = new Calculator(16 , 4);
    cal.sum();
    cal.sub();
    cal.mul();
    cal.div();
    cal.show();
  }}