Program Code
 package assignment;

 class Calculation {
   int z;

   public void addition(int x, int y) {
    z = x + y;
    System.out.println("The sum of the given numbers:"+z);
   }

   public void Subtraction(int x, int y) {
    z = x - y;
    System.out.println("The difference between the given numbers:"+z);
   }
  }
   public void multiplication(int x, int y) {
    z = x * y;
    System.out.println("The product of the given numbers:"+z);
   }

   public static void main(String args[]) {
   int a = 20, b = 10;
   My_Calculation demo = new My_Calculation();
   demo.addition(a, b);
   demo.Subtraction(a, b);
   demo.multiplication(a, b);
   }
 }
Code Objective
Explanation
Console