Have you tried "9" instead of "1.9"? I believe the 1.x was dropped with Java 9's release. Also might want to bump it to Java 11 as that is a LTS release, as 9 was only supported for 6 months from september 2017 to march 2018.
Also with 9 and newer, maven.compiler.source/maven.compiler.target have been replaced with maven.compiler.release. Not sure if the test versions also changed or not. I've no zero luck with a single pom with multiple src/test/java directories, using different jdk's. The compiler supports toolchain but when I last tried only for src/main directories, not for src/test directories. Also when the tests run they see everything in target/test-classes so do you run them with 1.8 or 9? JEP 238 supports multiple java versions in a single jar, but last time i tried it appears to have a bug that the base version has to be java 9. Not sure if the above helps or not, or give any insight. John On Wed, 9 Jun 2021 at 15:29, Gilles Sadowski <gillese...@gmail.com> wrote: > > Hi. > > "Commons Numbers" POM of module "commons-numbers-core" > contains > ---CUT--- > <!-- JDK 9+ required for BigDecimal.sqrt() method in unit tests. --> > <maven.compiler.testSource>1.9</maven.compiler.testSource> > <maven.compiler.testTarget>1.9</maven.compiler.testTarget> > ---CUT--- > > Running > $ JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/ mvn test site site:stage > fails: > ---CUT--- > [...] > [ERROR] Failed to execute goal > org.apache.maven.plugins:maven-compiler-plugin:3.8.1:testCompile > (default-testCompile) on project commons-numbers-core: Fatal error > compiling: invalid target release: 1.9 -> [Help 1] > ---CUT--- > > Regards, > Gilles > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org > For additional commands, e-mail: dev-h...@commons.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
