supply sources and javadco

Author: kwin

pom.xml

@@ -56,7 +56,7 @@
         <java.target.version>8</java.target.version> <!-- used for compiler plugin and animal-sniffer, for compatibility reasons with Java 9 only the values 6,7,8 and 9 is allowed -->
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <junit.jupiter.version>5.6.0</junit.jupiter.version>
-        <arguments /> <!-- additional arguments for the forked Maven run during releases -->
+        <arguments/> <!-- additional arguments for the forked Maven run during releases -->
     </properties>
 
     <dependencyManagement>
@@ -112,6 +112,14 @@
                     <artifactId>maven-jar-plugin</artifactId>
                     <version>3.2.0</version>
                 </plugin>
+                <plugin>
+                    <artifactId>maven-javadoc-plugin</artifactId>
+                    <version>3.1.1</version>
+                </plugin>
+                <plugin>
+                    <artifactId>maven-source-plugin</artifactId>
+                    <version>3.2.0</version>
+                </plugin>
                 <plugin>
                     <artifactId>maven-release-plugin</artifactId>
                     <version>3.0.0-M1</version>
@@ -295,7 +303,32 @@
                 </property>
             </activation>
             <build>
+                <!-- https://central.sonatype.org/pages/requirements.html -->
                 <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-source-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <id>attach-sources</id>
+                                <goals>
+                                    <goal>jar-no-fork</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-javadoc-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <id>attach-javadocs</id>
+                                <goals>
+                                    <goal>jar</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-gpg-plugin</artifactId>