feat(slf4j): initial commit
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# Files
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.classpath
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.externalToolBuilders
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.gradle
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.project
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.pydevproject
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.settings
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.sonar
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*~
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*.ipr
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*.iml
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*.iws
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*.swp
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*.DS_Store
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*.snap.debug
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dependency-reduced-pom.xml
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# Directories
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.idea/
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.run/
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.venv/
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_site/
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build/
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dist/
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docs/_build/
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gen-java/
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gen-javabean/
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gen-py/
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node_modules/
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target/
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# Overview
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This project shows an example how to use Simple Logging Facade for Java (slf4j).
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# Links
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns="http://maven.apache.org/POM/4.0.0"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<name>slf4j</name>
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<description>description</description>
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<url>https://swingbe.de</url>
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<groupId>org.swingbe.de</groupId>
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<artifactId>slf4j</artifactId>
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<version>0.0.1</version>
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<packaging>jar</packaging>
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<licenses>
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<license>
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<name>GNU General Public License</name>
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<url>https://www.gnu.org/licenses/gpl-3.0.txt</url>
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</license>
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</licenses>
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<scm>
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<url>https://github.com/Software-Ingenieur-Begerad/sandbox-java</url>
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</scm>
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<properties>
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<!-- Other properties -->
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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</properties>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.8.1</version>
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<configuration>
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<!-- Target Java versions -->
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<release>11</release>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-shade-plugin</artifactId>
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<version>3.2.1</version>
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<executions>
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<execution>
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<phase>package</phase>
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<goals>
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<goal>shade</goal>
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</goals>
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<configuration>
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<filters>
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<filter>
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<!-- exclude signatures from merged JAR to avoid invalid signature messages -->
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<artifact>*:*</artifact>
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<excludes>
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<exclude>META-INF/*.SF</exclude>
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<exclude>META-INF/*.DSA</exclude>
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<exclude>META-INF/*.RSA</exclude>
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</excludes>
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</filter>
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</filters>
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<!-- The shaded JAR will not be the main artifact for the project, it will be attached
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for deployment in the way source and docs are. -->
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<shadedArtifactAttached>true
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</shadedArtifactAttached>
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<shadedClassifierName>shaded</shadedClassifierName>
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<transformers>
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<transformer
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implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
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<transformer
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implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
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<manifestEntries>
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<Main-Class>de.swingbe.slf4j.Main
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</Main-Class>
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</manifestEntries>
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</transformer>
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</transformers>
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</configuration>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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<dependencies>
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<dependency>
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<groupId>org.apache.logging.log4j</groupId>
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<artifactId>log4j-slf4j-impl</artifactId>
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<version>2.9.0</version>
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</dependency>
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</dependencies>
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</project>
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package de.swingbe.slf4j;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class Bar {
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public final static Logger LOG = LoggerFactory.getLogger(Bar.class);
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public boolean doIt() {
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LOG.error("Did it again!");
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return false;
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}
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}
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package de.swingbe.slf4j;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class Main {
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public final static Logger LOG = LoggerFactory.getLogger(Main.class);
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public static void main(String[] args) {
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System.out.println("Hello world!");
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LOG.debug("Debug Message Logged !!!");
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LOG.info("Info Message Logged !!!");
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LOG.error("Error Message Logged !!!",
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new NullPointerException("NullError"));
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String variable = "Hello John";
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LOG.debug("Printing variable value: {}", variable);
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LOG.trace("Entering application.");
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Bar bar = new Bar();
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if (!bar.doIt()) {
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LOG.error("Didn't do it.");
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}
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LOG.trace("Exiting application.");
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return;
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}
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}
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<?xml version="1.0" encoding="UTF-8"?>
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<Configuration status="INFO">
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<Appenders>
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<RollingFile name="rollingFile"
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fileName="sizeRolling.log"
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filePattern="sizeRolling-%d{yyyy-MM-dd}.log"
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ignoreExceptions="false"
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>
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<PatternLayout>
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<Pattern>[%-5p] %d{yyyy-MM-dd HH:mm:ss.SSS} %c{1} %m%n</Pattern>
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</PatternLayout>
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<Policies>
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<SizeBasedTriggeringPolicy size="21MB"/>
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</Policies>
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<DefaultRolloverStrategy max="5"/>
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</RollingFile>
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<Console name="console" target="SYSTEM_OUT">
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<PatternLayout
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pattern="[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} %c{1} - %msg%n"/>
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</Console>
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</Appenders>
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<Loggers>
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<Logger name="de.swingbe" level="all" additivity="true">
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<appender-ref ref="rollingFile" level="debug"/>
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</Logger>
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<Root level="debug" additivity="false">
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<appender-ref ref="console"/>
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</Root>
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</Loggers>
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</Configuration>
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