java - Logging debug messages -


out of curiosity, there benefit when logging (using log4j) use above approach:

if (logger.isdebugenabled()) {      logger.debug("new session created"); }

rather just:

 logger.debug("new session created");

is merely (potential) performance enhancement , still relevant? should used wrap debug output?

thanks thoughts!

in use case, no, there's no benefit whatsoever.

however, if constructing new string, example, "new session create" + sessionid, you'd want avoid string construction , rather use boolean check.

it's small difference, in large application, string construction, , associated garbage collection, become point of performance impact. if pass static strings, however, creating duplicate check, which, while small, has possible performance impact.


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