Maven generated POM for JavaFx

[HRH <hr...@yahoo.com.INVALID>]

Hi,
I was looking through the POM that was generated for my JavaFX project and I noticed it has generated properties for the compiler as follow:
 <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <!-- I have commented the following two line and nothing was broken -->
        <!--<maven.compiler.source>11</maven.compiler.source> -->
        <!--<maven.compiler.target>11</maven.compiler.target> -->
    </properties>
It also has generated a plugin for the compiler:
<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.0</version>
                <configuration>
                    <release>11</release>
                </configuration>
</plugin>
Do I need both of these compiler directives in the POM, wouldn't one suffice?
Thanks