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

Additionally to the other ways you tried:

Gradle has a default JVM set in your %userprofile%/.gradle/gradle.properties. This is in the folder "C:\Users\j.gradle\gradle.properties" for me:

org.gradle.java.home=C:/Program Files/AdoptOpenJDK/jdk-11.0.7.10-hotspot

That's where you should also put your newer JVM to make sure gradle can compile newer projects.