// validating/SLF4JLevels.java

// (c)2016 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://mindviewinc.com/Books/OnJava/ for more book information.

import org.slf4j.*;

public class SLF4JLevels {

private static final Logger log =

LoggerFactory.getLogger(SLF4JLevels.class);

public static void main(String[] args) {

log.trace("Hello");

log.debug("Logging");

log.info("Using");

log.warn("the SLF4J");

log.error("Facade");

}

}

/* Output:

2016-08-22T14:33:01.951

[main] TRACE SLF4JLevels - Hello

2016-08-22T14:33:01.954

[main] DEBUG SLF4JLevels - Logging

2016-08-22T14:33:01.954

[main] INFO SLF4JLevels - Using

2016-08-22T14:33:01.955

[main] WARN SLF4JLevels - the SLF4J

2016-08-22T14:33:01.955

[main] ERROR SLF4JLevels - Facade

*/