Java 將Map按Value值降序排列

/**
     * 將集合按照降序排列-FLOAT
     * @param nowPartTwoData
     * @return
     */
    private static  List<Map.Entry<String,Float>> sortByValueFloatDesc(Map<String, Float> nowPartTwoData){
        //這里將map.entrySet()轉換成list
        List<Map.Entry<String,Float>> list = new ArrayList<Map.Entry<String,Float>>(nowPartTwoData.entrySet());
        //然后通過比較器來實現排序
        Collections.sort(list,new Comparator<Map.Entry<String,Float>>() {
            //降序排序
            @Override
            public int compare(Map.Entry<String, Float> o1,
                               Map.Entry<String, Float> o2) {
                return o2.getValue().compareTo(o1.getValue());
            }
        });

        return list;
    }