对象数组排序

//对象数组排序for (int i = 0; i < list.size(); i++) {       long a = list.get(i).getMaxNum();       HzxhSign product = list.get(i);       for (int j = 0; j < i; j++) {                long b = list.get(j).getMaxNum();                //修改< >倒序或顺序                 if (a > b) {                       product = list.get(j);                       list.set(j, list.get(i));                       list.set(i, product);                  }        }}