[java]LinkedHashMap

最近常常看這樣樣形式的 LinkedHashMap 用法
繼承 hashmap 以獲得 put method。
Methods inherited from class java.util.HashMap clone, containsKey, entrySet, isEmpty, keySet, put, putAll, remove, size, values

Map<String, Object> properties = new LinkedHashMap<String, Object>();

若要得到有序的hashtable便可以使用這個ADT，
另外可參照 treehashmap,hashmap

cf.
Difference between HashMap, LinkedHashMap and SortedMap in java - Stack Overflow
http://stackoverflow.com/questions/2889777/difference-between-hashmap-linkedhashmap-and-sortedmap-in-java
老紫竹JAVA提高教程(14)-认识Map之LinkedHashMap - 老紫竹的专栏 - 博客频道 - CSDN.NET
http://blog.csdn.net/java2000_net/article/details/3741565
深入Java集合学习系列：LinkedHashMap的实现原理 - 莫等闲 - ITeye技术网站
http://zhangshixi.iteye.com/blog/673789
LinkedHashMap (Java Platform SE 6)
http://docs.oracle.com/javase/6/docs/api/java/util/LinkedHashMap.html