Kotlin could not find the required JDK tools in the Java installation

Question

When running ./gradlew clean build I get following message:

> Task :compileKotlin FAILED

FAILURE: Build failed with an exception.

* What we         


        

Answer 1

> Kotlin could not find the required JDK tools in the Java installation '/usr/lib/jvm/java-8-openjdk-amd64/jre' used by Gradle. Make sure Gradle is running on a JDK, not JRE.

it's set to /usr/lib/jvm/java-8-openjdk-amd64/jre.

Should set the JAVA_HOME to /usr/lib/jvm/java-8-openjdk-amd64/

If your OS is Ubuntu, make suer to install openjdk jdk by sudo apt-get install openjdk-8-jdk

sudo apt install openjdk-8-jre-headless will install jre, not jdk