009-java中常用的单个键值对

1、Java 6提供AbstractMap.SimpleEntry<K,V>和AbstractMap.SimpleImmutableEntry<K,V>

Map.Entry<String,Integer> entry1 = new AbstractMap.SimpleEntry<String, Integer>("key", 9527);

2、Apache commons-collections的KeyValue

Map.Entry<String,Integer> entry3 = new DefaultMapEntry("key", 9527)
KeyValue<String,Integer> kv = new DefaultKeyValue("rkey", 9527);

3、Guava的Maps.immutableEntry

Map.Entry<String,Integer> entry2 = Maps.immutableEntry("key", 9527);

4、Apache commons-lang3的Pair

Map.Entry<String,Integer> entry4 =new ImmutablePair<String,Integer>("key", 9527);

5、Apache HttpClient的NameValuePair

NameValuePair nv = new BasicNameValuePair("key", "9527");

可以扩展Map.Entry或者封装Class。