step 1: added calculator class

premaseem · premaseem · commit 45fc3392b37e · 2018-01-09T12:03:05.000-06:00
diff --git a/src/com/premaseem/Calculator.java b/src/com/premaseem/Calculator.java
@@ -0,0 +1,13 @@
+package com.premaseem;
+
+/*
+@author: Aseem Jain
+@title: Design Patterns with Java 9
+@link: https://premaseem.wordpress.com/category/computers/design-patterns/
+*/
+public class Calculator {
+
+    public Integer add(Integer sum, Integer number){
+        return sum + number;
+    }
+}
diff --git a/src/com/premaseem/Client.java b/src/com/premaseem/Client.java
@@ -0,0 +1,24 @@
+package com.premaseem;
+
+/*
+@author: Aseem Jain
+@title: Design Patterns with Java 9
+@link: https://premaseem.wordpress.com/category/computers/design-patterns/
+@copyright: 2018 Packt Publication
+*/
+public class Client {
+    public static void main (String[] args) {
+        System.out.println("program to add number");
+        Integer sum = calculateSum();
+        System.out.println("total of all numbers is "+ sum);
+    }
+
+    private static Integer calculateSum () {
+        Integer sum = 0;
+        for (int i =0; i< 1000; i++){
+            Calculator calc = new Calculator();
+            sum = calc.add(sum,i);
+        }
+        return sum;
+    }
+}
