Why Does My Maven Build Fail with \'java.lang.IllegalArgumentException\' When Compiling Java 10/11?

Unable to Compile Java 10/11 Project with Maven

A common issue encountered when attempting to compile Java 10 or 11 projects with Maven is a failure with the error message "java.lang.IllegalArgumentException". This error occurs due to limitations in the Maven compiler plugin.

Fix

To resolve this issue, the following steps can be taken:

1. Configure the Plugin Version: Use the maven-compiler-plugin version 3.8.0 or later, which supports Java 10 and 11. By default, the plugin compiles code using Java version 1.6, so it needs to be explicitly specified.

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.8.0</version>
</plugin>

2. Specify the Release: In the plugin configuration, set the "release" property to the desired Java version, either 9, 10, or 11.

<configuration>
    <release>11</release>
</configuration>

Note: The default source/target levels have been updated to 1.6 with the new plugin version.

Extended Support for JDK 12

The same maven-compiler-plugin version 3.8.0 can also be used to compile code against JDK 12. Refer to the Maven documentation for details on compiling and executing Java preview features with Maven.

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