build source to binary jar

.xml

<build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>test-jar</goal>
                        </goals>
                        <configuration>
                            <includes>
                                <include>src/main/java</include>
                            </includes>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>