Enum 사용 팁?

 

public enum MessageType
{
  Error(0),  SPR(65537),  SSR(65538),  State(2),  CmdAnswer(4),  Command(5),  CompoundIOConfig(102),  CompoundIOValues(111),  Event(21),  List(13),  ReturnState(14),  Update(30),  Stop(31),  KeepAlive(1212752128),  Register(1380271872),  CompoundRequest(120),  CompoundReply(121),  CompoundEvent(122),  Unknown(-1);
  
  private int _id;
  private static MessageType[] _types = values();
  
  private MessageType(int id)
  {
    this._id = id;
  }
  
  public int getId()
  {
    return this._id;
  }
  
  public static MessageType fromId(int id)
  {
    for (MessageType type : _types) {
      if (type._id == id) {
        return type;
      }
    }
    return Unknown;
  }
}

switch (MessageType.fromId(message.getType()).ordinal())
{
case 1: 
  handleListMessage(message);
  break;