在list<Object>集合中修改元素报错 

@Data
public class RoomStatus {

    private String roomNo;

    private String roomStatus;

}

List<RoomStatus> roomStatusList = new ArrayList<>();
RoomStatus roomStatus = new RoomStatus();
roomStatus.setRoomNo("a001");
roomStatus.setRoomStatus("0");
RoomStatus roomStatus2 = new RoomStatus();
roomStatus2.setRoomNo("a002");
roomStatus2.setRoomStatus("0");
roomStatusList.add(roomStatus);
roomStatusList.add(roomStatus2);

//.........n多