📝 update datetimeapi example

hellokaton · hellokaton · commit c71002978250 · 2018-03-03T16:18:35.000+08:00
diff --git a/java8-datetime-api/src/main/java/io/github/biezhi/datetime/ZoneIdExample.java b/java8-datetime-api/src/main/java/io/github/biezhi/datetime/ZoneIdExample.java
@@ -17,10 +17,12 @@ public static void main(String[] args) {
         ZoneId defaultZoneId  = ZoneId.systemDefault();
         ZoneId shanghaiZoneId = ZoneId.of("Asia/Shanghai");
 
+        // TimeZone 转换为 ZoneId
         ZoneId oldToNewZoneId = TimeZone.getDefault().toZoneId();
 
         System.out.println(defaultZoneId);
         System.out.println(shanghaiZoneId);
+        System.out.println(oldToNewZoneId);
 
         System.out.println(ZoneId.getAvailableZoneIds());
     }
