- Deprecated.Please use java.util.LinkedHashMap, instead
public class OrderedHashMap<K,V>extends HashMap<K,V>implements Cloneable, Serializable
An OrderedHashMap is a java.util.HashMap with one additional property: It maintains a list of the map's keys in the order they were added to the map. This additional capability imposes a small amount of extra overhead on insertion and a larger amount of overhead on key removal, but absolutely no additional key lookup overhead. This class is conceptually similar to (though less feature-rich than) the java.util.LinkedHashMap class added in JDK 1.4.