public static void main(String[] args) {
    Operations pp = new Operations();
    System.out.println("addition =" + (pp.a + pp.b));
    System.out.println("subtraction =" + (pp.a - pp.b));
    System.out.println("multiplication =" + (pp.a * pp.b));
    System.out.println("division =" + (pp.a / pp.b));
    System.out.println("modules =" + (pp.a % pp.b));
}