Gradle – Different JDK Version for Source and Test

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Issue

How can I configure Gradle to compile test classes for a different Java version than source classes?

I’m writing a project for Java 1.7, and I want to use Java 1.8 in my tests so I can use Lambda Behave. In Maven this is pretty straightforward, but I can’t see how to achieve the same result in Gradle.

Solution

Of course, immediately after posting the question I stumble across the answer!

apply plugin: "java"

compileJava {
    sourceCompatibility  1.7
}

compileTestJava {
    sourceCompatibility  1.8
}

Answered By – EngineerBetter_DJ

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