break it as test...

MvnDemo/pom.xml

@@ -41,7 +41,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>
-				<version>3.13.0</version>
+				<version>3.8.1</version>
 				<configuration>
 					<source>${maven.compiler.source}</source>
 					<target>${maven.compiler.target}</target>
@@ -52,10 +52,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-shade-plugin</artifactId>
-				<version>3.6.0</version>
+				<version>3.2.4</version>
-				<configuration>
-					<createDependencyReducedPom>false</createDependencyReducedPom>
-				</configuration>
 				<executions>
 					<execution>
 						<phase>package</phase>
@@ -66,7 +63,8 @@
 							<transformers>
 								<transformer
 									implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
-									<mainClass>de.hs_mannheim.informatik.mvn.Main</mainClass>
+									<mainClass>
+										de.hs_mannheim.informatik.mvn.Main</mainClass>
 								</transformer>
 							</transformers>
 						</configuration>
@@ -100,10 +98,6 @@
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-pmd-plugin</artifactId>
 				<version>3.26.0</version>
-				<configuration>
-					<failOnViolation>false</failOnViolation>
-					<printFailingErrors>true</printFailingErrors>
-				</configuration>
 				<executions>
 					<execution>
 						<phase>verify</phase>
@@ -112,19 +106,22 @@
 						</goals>
 					</execution>
 				</executions>
-			</plugin>
+			</plugin> 
 
 		</plugins>
 
 	</build>
 
 	<reporting>
+
 		<plugins>
-			<!-- generate Javadocs via "mvn site" and find them in the sie folder-->
+
+			<!-- generate Javadocs via "mvn site" and find them in the site
+			folder-->
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>3.11.2</version>
+				<version>3.11.1</version>
 				<configuration>
 					<show>private</show>
 					<nohelp>true</nohelp>
@@ -134,7 +131,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-checkstyle-plugin</artifactId>
-				<version>3.6.0</version>
+				<version>3.0.0</version>
 			</plugin>
 
 		</plugins>

MvnDemo/src/main/java/de/hs_mannheim/informatik/mvn/Main.java

@@ -1,41 +1,20 @@
 package de.hs_mannheim.informatik.mvn;
 
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-
-import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 
 public class Main {
-	// Aufruf mit externer Log-Config im gleichen Pfad wie das JAR:
+	private static final Logger LOG = LogManager.getLogger();
-	// java -Dlog4j.configurationFile=log4j2.xml -jar MvnDemo-0.0.1-SNAPSHOT.jar
-	private static final Logger LOG = LogManager.getLogger(Main.class);
 
 	public static void main(String[] args) {
-		LOG.info("Hallo Log4J");
+		LOG.info("Hallo Maven!");break it
 		
-		System.out.println("Hello!");
-		System.out.println(loadText("someText.txt"));
 		System.out.println(new Main().add(3, 4));
 	}
 
 	public int add(int a, int b) {
 		LOG.info("a = {}, b = {}", a, b);
-
+		
 		return a + b;
 	}
-
-	public static String loadText(String filename) {
-		try (InputStream in = Main.class.getClassLoader().getResourceAsStream(filename);
-				BufferedReader reader = new BufferedReader(new InputStreamReader(in))) {
-			
-			return reader.readLine();
-		} catch (IOException e) {
-			e.printStackTrace();
-		}
-
-		return null;
-	}
 }

MvnDemo/src/main/resources/log4j2.xml

@@ -1,18 +1,17 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<Configuration xmlns="https://logging.apache.org/xml/ns"
+<Configuration status="WARN">
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="https://logging.apache.org/xml/ns https://logging.apache.org/xml/ns/log4j-config-2.xsd">
 	<Appenders>
-		<!-- Console appender configuration -->
+		<!-- Konsole Appender -->
-		<Console name="console" target="SYSTEM_OUT">
+		<Console name="Console" target="SYSTEM_OUT">
 			<PatternLayout
-				pattern="%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n" />
+				pattern="%d{yyyy-MM-dd HH:mm:ss} [%t] %-5level %C{1} - %msg%n" />
 		</Console>
 	</Appenders>
+
 	<Loggers>
-		<!-- Root logger referring to console appender -->
+		<!-- Root Logger -->
-		<Root level="INFO" additivity="false">
+		<Root level="info">
-			<AppenderRef ref="console" />
+			<AppenderRef ref="Console" />
 		</Root>
 	</Loggers>
 </Configuration>

MvnDemo/src/main/resources/someText.txt

@@ -1 +0,0 @@
-Hallo Maven!

MvnDemo/src/test/java/de/hs_mannheim/informatik/mvn/AddTest.java

@@ -6,13 +6,8 @@ import org.junit.jupiter.api.Test;
 class AddTest {
 
 	@Test
-	void testAdd() {
+	void test() {
 		assertEquals(7, new Main().add(3, 4));
 	}
-	
-	@Test
-	void testLoader() {
-		assertEquals("Test Text", Main.loadText("test.txt"));
-	}
 
 }

MvnDemo/src/test/resources/test.txt

@@ -1 +0,0 @@
-Test Text