// validating/SLF4JLevels.java

// (c)2021 MindView LLC: see Copyright.txt

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

// Visit http://OnJava8.com for more book information.

import org.slf4j.*;

public class SLF4JLevels {

private static 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:

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[main] TRACE SLF4JLevels - Hello

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[main] DEBUG SLF4JLevels - Logging

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[main] INFO SLF4JLevels - Using

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[main] WARN SLF4JLevels - the SLF4J

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[main] ERROR SLF4JLevels - Facade

*/