Exactly, their "solution" doesn't actually solve the problem people had. Also, {}? Why not: logger.debug(String.format("Hi, %s %s", u.getA(), u.getB()));

Exactly, their "solution" doesn't actually solve the problem people had. Also, {}? Why not: logger.debug(String.format("Hi, %s %s", u.getA(), u.getB())); If they wanted to have format capabilities in the logger, why didn't they just use pre-existing standards?