Java Map的排序实例详解

Map<String, Integer> map_Data = new HashMap<String, Integer>();
map_Data.put("A", 98);
map_Data.put("B", 50);
map_Data.put("C", 76);
map_Data.put("D", 23);
map_Data.put("E", 85);

List<Map.Entry<String,Integer>> list_Data = new ArrayList<Map.Entry<String,Integer>>(map_Data.entrySet());

Collections.sort(list_Data, new Comparator<Map.Entry<String, Integer>>() { 
  public int compare(Map.Entry<String, Integer> o1, Map.Entry<String, Integer> o2) {
    return o2.getValue() - o1.getValue();
  }
});