build-helper-maven-plugin

It is a useful Maven plugin provided by the Mojo project "org.codehaus.mojo". It helps in managing various aspects of the build process. Some of the ways in which it helps is given below.

• Add more source directories to the project

• Add more test source directories to your project

• Add more resource directories to your project

• Attach additional artifacts to your project

• Access the parsed components of a project version (properties then can be used in other parts of the Maven build or in the POM configuration)

• Resolve the latest released version of a project

• Remove a project's artifacts from local repository

• Reserve a list of random and unused network ports

• Retrieve current host IP address

• Retrieve current hostname

• Retrieve available number of CPUs

Visit the official documentation for more details - https://www.mojohaus.org/build-helper-maven-plugin/usage.html

Example 1: Adding source and test directories to the build path.

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>build-helper-maven-plugin</artifactId>
    <executions>
        <!-- Add more source directories from target folder to the project -->
        <execution>
            <id>add-build-sources</id>
            <phase>generate-sources</phase>
            <goals>
                <goal>add-source</goal>
            </goals>
            <configuration>
                <sources>
                    <source>${project.build.directory}/generated-sources</source>
                </sources>
            </configuration>
        </execution>
        <!-- Add more source directories from main-2 folder to the project -->
        <execution>
            <id>add-main-2-sources</id>
            <phase>generate-sources</phase>
            <goals>
                <goal>add-source</goal>
            </goals>
            <configuration>
                <sources>
                    <source>${basedir}/src/main-2/java</source>
                </sources>
            </configuration>
        </execution>
        <!-- Add more resource directories from main-2 folder to the project -->
        <execution>
            <id>add-main-2-resources</id>
            <phase>generate-resources</phase>
            <goals>
                <goal>add-resource</goal>
            </goals>
            <configuration>
                <resources>
                    <resource>
                        <directory>${basedir}/src/main-2/resources</directory>
                        <targetPath>resources</targetPath>
                        <excludes>
                            <exclude>**/junk/**</exclude>
                        </excludes>
                    </resource>
                </resources>
            </configuration>
        </execution>
        <!-- Add more test source directories from test-2 folder to the project -->
        <execution>
            <id>add-test-2-sources</id>
            <phase>generate-test-sources</phase>
            <goals>
                <goal>add-test-source</goal>
            </goals>
            <configuration>
                <sources>
                    <source>${basedir}/src/test-2/java</source>
                </sources>
            </configuration>
        </execution>
        <!-- Add more test resource directories from test-2 folder to the project -->
        <execution>
            <id>add-test-2-resource</id>
            <phase>generate-test-resources</phase>
            <goals>
                <goal>add-test-resource</goal>
            </goals>
            <configuration>
                <resources>
                    <resource>
                        <directory>${basedir}/src/test-2/resources</directory>
                        <targetPath>resources</targetPath>
                        <excludes>
                            <exclude>**/junk/**</exclude>
                        </excludes>
                    </resource>
                </resources>
            </configuration>
        </execution>
    </executions>
</plugin>

Run mvn clean compile or click on load maven changes button in Intellij in pom.xml file to reflect the changes.