添加example

byhieg · byhieg · commit c6cef32df189 · 2017-02-24T16:12:02.000+08:00
diff --git a/src/main/java/cn/byhieg/collectiontutorial/maptutorial/HashMapExample.java b/src/main/java/cn/byhieg/collectiontutorial/maptutorial/HashMapExample.java
@@ -5,4 +5,12 @@
  * Mail byhieg@gmail.com
  */
 public class HashMapExample {
+
+
+    public static void main(String[] args) {
+
+
+    }
+
+
 }
