guava 创建自定义multimap

/**
 * Created by jianjun.yu on 15-4-22.
 */
public class MultimapUtils {


    //创建简单treeMultiMap, key有序， value为普通arrayList(guava 自带treeMultiMap，value是有序,并且为set继承类)
    public static <Key, Value>Multimap<Key, Value> createSimpleTreeMultimap() {
        return Multimaps.newListMultimap(new TreeMap<Key, Collection<Value>>(), new Supplier<List<Value>>() {
            @Override
            public List<Value> get() {
                return Lists.newArrayList();
            }
        });
    }
}

guava 创建自定义multimap

原文：http://blog.csdn.net/minna_d/article/details/45341677