How to Fix Maven Compiler Plugin Errors with Java 10/11 Projects?

Maven Compiler Plug-in Error with Java 10/11 Projects

Problem:

When attempting to build a simple Maven project with Java 10 or 11, the following error may occur:

Execution default-testCompile of goal org.apache.maven.plugins:maven-compiler-plugin:3.7.0:testCompile failed: java.lang.IllegalArgumentException

Issue:

The root cause of this issue is a version conflict between the Java version used within Maven and the version specified in the project.

Solution:

To resolve the issue, configure the Java version used in Maven to match the project's Java version. Additionally, use the maven-compiler-plugin version 3.8.0 or higher without explicitly specifying any dependencies. Here's the updated Maven configuration:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.8.0</version>
    <configuration>
        <release>11</release>  <!-- or <release>10</release> -->
    </configuration>
</plugin>

Note:

• The default source/target version for Java has been raised to 1.6 in maven-compiler-plugin version 3.8.0.
• This solution works for compiling projects against Java 12 as well using the same maven-compiler-plugin version.

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