How do I tell Gradle to use specific JDK version?

Question

I can\'t figure out to get this working.

Scenario:

• I have an application built with gradle
• The application uses JavaFX

What I w

Answer 1

I added this line in my GRADLE_HOME/bin/gradle file - export JAVA_HOME=/path/to/java/version

Answer 2

For windows run gradle task with jdk 11 path parameter in quotes

gradlew clean build -Dorg.gradle.java.home="c:/Program Files/Java/jdk-11"

Answer 3

If you have this problem from Intellij, try this options

1. Set Gradle JVM Home

2. Set the JDK version in the Project module settings

Answer 4

As seen in Gradle (Eclipse plugin)

http://www.gradle.org/get-started

Gradle uses whichever JDK it finds in your path (to check, use java -version). Alternatively, you can set the JAVA_HOME environment variable to point to the install directory of the desired JDK.

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If you are using this Eclipse plugin or Enide Studio 2014, alternative JAVA_HOME to use (set in Preferences) will be in version 0.15, see http://www.nodeclipse.org/history

Answer 5

If you add JDK_PATH in gradle.properties your build become dependent on on that particular path. Instead Run gradle task with following command line parametemer

gradle build -Dorg.gradle.java.home=/JDK_PATH

This way your build is not dependent on some concrete path.

Answer 6

Two ways

1. In gradle.properties in the .gradle directory in your HOME_DIRECTORY set org.gradle.java.home=/path_to_jdk_directory

or:

2. In your build.gradle

    compileJava.options.fork = true
    compileJava.options.forkOptions.executable = '/path_to_javac'