How to make a list sort according to the order of another list

Go straight to the code ：

// First of all, make sure List<User> users and List<Long> userIds

public void setListOrder(List<User> users, List<Long> userIds){
       users.sort((o1,o2) -> {
           int io1 = ids.indexOf(o1.getId());
           int io2 = ids.indexOf(o2.getId());
           if(io1 != -1){
              io1 = users.size() - io1;
           }
           if(io2 != -1){
              io2 = users.size() - io2;
           }
           return io2-io1;
       });
}