You don't understand my idea a little. My idea is to use enums as log message id. The resource bundle keys is one of ways binding enums to log messages. Of cause, we need to check the consistency of the resource bundle keys.

Log level annotation is one of ways. This is type safe.

If we follow up type safe, there is my thinking idea.

---- Binding enums to log messages by coding

---- public class JapanLogMessages implements LocalizedMessage<LogMessages>{ // return target locale public Locale locale() { return Locale.JAPAN; // target local } // return message bound log message id. public String toMessage(LogMessages logId){ switch (logId){ case TEST0001: // log message id return "japanene log message"; // return localized message } return null; } }

---- Switch case is type safe. In development, enums is useful because it is type safe.

I think enums have application possibility.