Maven is not working in Java 8 when Javadoc tags are incomplete

java

javadoc

maven

doclint

byNikita Barsukov·Aug 3, 2024

To quickly bypass Maven Java 8 Javadoc issues, configure the maven-javadoc-plugin to ignore errors. In your pom.xml, include the following snippet:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-javadoc-plugin</artifactId>
    <configuration>
        <failOnError>false</failOnError>
        <!-- Ignoring Javadoc errors, like ignoring unsolicited advice -->
    </configuration>
</plugin>

This setup prevents build failures when encountering Javadoc errors, thus enabling Maven builds to continue unimpeded.

Strategy for dealing with incomplete Javadoc tags and Java 8

Fixing Javadoc errors: Primary approach

While ignoring errors could be a quick fix, it's crucial to address Javadoc issues into your source code when you can. A clean, correct Javadoc is the first line of defense against future bugs or confusion.

Dealing with Java 8 DocLint: Set and forget

Java 8 initiated DocLint, which has strict Javadoc checks for quality control. To disable DocLint, add -Xdoclint:none into <additionalparam> in your maven-javadoc-plugin:

<additionalparam>-Xdoclint:none</additionalparam>
<!-- Think of this as DocLint's chill pill -->

Profiling in Javadoc: As per JDK need

Create a Maven profile which targets only Java 8 builds. This strategy helps to maintain compatibility with other JDK versions:

<profiles>
    <profile>
        <id>doclint-java8-disable</id>
        <!-- Becomes active only on Java 8 -->
    </profile>
</profiles>

Enjoy multi-JDK compatibility: Test, test, and test!

Test your code across various JDKs, namely 6, 7, 8, and 11. Use dynamic checking with Continuous Integration software to assure your documentation builds in all environments.

Mojo for different scenarios on Maven

Catering to Maven 3.0.0 users: Join the club!

For users of Maven 3.0.0, replace <additionalparam> with <doclint>. This action is due to specific plugin configurations according to the versions.

DRY principle for Javadoc plugin management: Let's get organized!

Keep your sanity intact by grouping all parameters into <properties>. Boom, your <additionalparam> is now configurable:

<properties>
    <javadoc.opts>-Xdoclint:none</javadoc.opts>
    <!-- Your very own box of parameters set once, used everywhere -->
</properties>

Use the ${javadoc.opts} to refer to these parameters within your maven-javadoc-plugin:

<additionalparam>${javadoc.opts}</additionalparam>
<!-- We love ${javadoc.opts} this much -->

Be all-inclusive with configurations: Combine forces!

Often, a combination of different solutions based on individual project needs gives the optimal configuration strategy. So, manage dependencies, profiles, and even plugin configurations to up your Maven game.

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