Logging three or more arguments in slf4j

I use slf4j for logging purposes. All the logging methods (Logger.info, Logger.debug, etc.) provide an efficient way of passing one or two argument objects. For e.g.
logger.info("The response from server is [{}]", serverResp);
logger.debug("Key [{}], Value [{}].", key, value);
 But if you want to pass three or more arguments you have to create an object array yourself and pass. Like this:
logger.info("Status [{}], message [{}], time taken [{} ms].", new Object[]{status, msg, timeTaken});
Doing a new everywhere in the code doesn't seem like an elegant way of doing it. I was thinking about a cool way of doing it, and this is what I came up with. Here is a utility method that makes use of varargs:

public static Object[] toObjArr(Object... args) {
    return args;
}

In the code we can use this utility function like this.
import static com.mydomain.Utils.toObjArr;
...
    logger.info("Status [{}], message [{}], time taken [{} ms].", toObjArr(status, msg, timeTaken));
A little-bit better readable than before.

Comments

Anonymous said…
Thanks for the post, was was quite surprised that slf4j does not support varargs... But still better then the rest.
10/09/2011 04:12:00 PM
Barristan the Bold said…
Varargs were added in Java 1.5 right? So this was probably done to be backward compatible.
5/18/2012 05:59:00 AM
Anonymous said…
Thanka for the info. it helped. :)
6/16/2012 04:18:00 AM
ganesh said…
thanks
11/25/2014 02:14:00 AM
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