<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>mtitek.logging.log4j.samples</groupId>
    <artifactId>mtitek-logging-log4j-samples</artifactId>
    <version>1.0.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13.2</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>2.0.6</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>2.0.6</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>

src/test/resources/log4j.xml:

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<log4j:configuration>
    <appender name="console" class="org.apache.log4j.ConsoleAppender">
        <param name="Target" value="System.out" />

        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%p [%d{ISO8601}] \(%F: %L\) %c - %m%n" />
        </layout>
    </appender>

    <appender name="file" class="org.apache.log4j.RollingFileAppender">
        <param name="File" value="./target/mtitek-logging-log4j-samples.log" />

        <param name="Append" value="false" />
        <param name="MaxFileSize" value="20MB" />
        <param name="MaxBackupIndex" value="10" />

        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%p [%d{ISO8601}] \(%F: %L\) %c - %m%n" />
        </layout>

        <filter class="org.apache.log4j.varia.LevelRangeFilter">
            <param name="LevelMin" value="ALL" />
        </filter>
    </appender>

    <logger name="mtitek.logging.log4j.samples" additivity="false">
        <level value="INFO" />
        <appender-ref ref="file" />
        <appender-ref ref="console" />
    </logger>

    <root>
        <priority value="INFO" />
        <appender-ref ref="file" />
        <appender-ref ref="console" />
    </root>
</log4j:configuration>

src/test/java/mtitek/logging/log4j/samples/Log4jTest.java:

package mtitek.logging.log4j.samples;

import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class Log4jTest {
    private static final Logger LOG = LoggerFactory.getLogger(Log4jTest.class);

    @Test
    public void test() {
        Log4jTest.LOG.info("test - looging - log4j");
        System.out.println("test - looging - log4j");
    }
}