Im использует slf4j для отслеживания информации. Мой код
private static final Logger log = LoggerFactory.getLogger(ObjectTest.class);
log.trace("Time taken to store " + count
+ " objects of size " + size + " is " + (time) + " msecs");
log.trace("Time taken to store {} objects of size {} is {} msecs",
new Object[] { count, size, time });
log.trace("Time taken to store {} objects of size {} is {} msecs",
count, size, time);
Каким будет предпочтительный механизм регистрации трасс.