Wrong Java Compiler When Including a Java Module as Dependency in Android Studio

Question

I have a java module in my Android Studio project that is a dependency of an Android module. I am having problems on build with the following exception appearing.

Answer 1

So I have found the solution at this blog post.

The trick is in your Java Library module's build.gradle file you need to include the following.

apply plugin: 'java'
sourceCompatibility = 1.6
targetCompatibility = 1.6

This will then work.