gradle java9 Could not target platform: 'Java SE 9' using tool chain: 'JDK 8 (1.8)'

Question

I want to use java9 on my gradle project inside eclipse oxygen. When I run:

Run as> Gradle Test on  GreeterTest.java

with the followin

Answer 1

I faced the issue because in IntelliJ Idea in the Settings > Build Tools > Gradle In "Gradle" section, Gradlje JVM used an incorrect Java version. So I specify to use JAVA_HOME and it fixes the issue.