Java Map的排序实例详解

Map map_Data = new HashMap();
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> list_Data = new ArrayList>(map_Data.entrySet());

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