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BruceEckelBruceEckel
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SLF4J support
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4 files changed

+37
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‎build.gradle

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@@ -299,8 +299,8 @@ configure(subprojects - project(':onjava')) {
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compile project(':onjava')
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compile group: 'com.google.guava', name: 'guava', version: '19.0'
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compile "org.openjdk.jmh:jmh-core:${jmh.jmhVersion}"
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compile group: 'org.apache.logging.log4j', name: 'log4j-api', version: '2.6.2'
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compile group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.6.2'
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//compile group: 'org.apache.logging.log4j', name: 'log4j-api', version: '2.6.2'
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//compile group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.6.2'
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}
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}
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‎verifying/LoggingLevels.java

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‎verifying/SLF4JLevels.java

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// verifying/SLF4JLevels.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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import org.slf4j.*;
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public class SLF4JLevels {
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private static final Logger logger =
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LoggerFactory.getLogger(SLF4JLevels.class);
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public static void main(String[] args) {
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logger.trace("level: trace");
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logger.debug("level: debug");
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logger.info("level: info");
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logger.warn("level: warn");
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logger.error("level: error");
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}
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}
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/* Output:
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20:09:34.499 [main] DEBUG SLF4JLevels - level: debug
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20:09:34.502 [main] INFO SLF4JLevels - level: info
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20:09:34.502 [main] WARN SLF4JLevels - level: warn
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20:09:34.502 [main] ERROR SLF4JLevels - level: error
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*/

‎verifying/logback.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<configuration>
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<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
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<encoder>
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<pattern>%d{yyyy-MM-dd'T'HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n
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</pattern>
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</encoder>
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</appender>
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<root level="TRACE">
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<appender-ref ref="STDOUT" />
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</root>
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</configuration>

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