step 2: monitored memory loss

src/com/premaseem/Calculator.java

@@ -6,7 +6,11 @@
 @link: https://premaseem.wordpress.com/category/computers/design-patterns/
 */
 public class Calculator {
-
+static int num = 0;
+ public Calculator(){
+ num++;
+ System.out.println(num+ " wasting memory with new object");
+ }
  public Integer add(Integer sum, Integer number){
  return sum + number;
  }