Create Demo.java

Author: itwanger

codes/java8demo/src/main/java/com/itwanger/s56/Demo.java

@@ -0,0 +1,14 @@
+package com.itwanger.s56;
+
+import java.util.HashMap;
+
+/**
+ * @author 微信搜「沉默王二」，回复关键字 Java
+ */
+public class Demo {
+    public static void main(String[] args) {
+        HashMap<String,String> map = new HashMap<String, String>();
+        map.put("chen", "沉");
+        map.put("chen", "沉1");
+    }
+}