/**      * @param h      * @return      * 实现对map按照value升序排序      */     @SuppressWarnings("unchecked")     public static Map.Entry[] getSortedHashtableByValue(Map h) {         Set set = h.entrySet();         Map.Entry[] entries = (Map.Entry[]) set.toArray(new Map.Entry[set                 .size()]);         Arrays.sort(entries, new Comparator() {             public int compare(Object arg0, Object arg1) {                 Long key1 = Long.valueOf(((Map.Entry) arg0).getValue().toString());                 Long key2 = Long.valueOf(((Map.Entry) arg1).getValue().toString());                 return key1.compareTo(key2);             }         });         return entries;     }  /**      * @param h      * @return      * 实现对map按照key排序      */     @SuppressWarnings("unchecked")     public static Map.Entry[] getSortedHashtableByKey(Map h) {         Set set = h.entrySet();         Map.Entry[] entries = (Map.Entry[]) set.toArray(new Map.Entry[set                 .size()]);         Arrays.sort(entries, new Comparator() {             public int compare(Object arg0, Object arg1) {                 Object key1 = ((Map.Entry) arg0).getKey();                 Object key2 = ((Map.Entry) arg1).getKey();                 return ((Comparable) key1).compareTo(key2);             }         });         return entries;     }