my JAVA_HOME
variable changed to Java 1.8 and I got this error message when compiling a pure java module as a dependency of my android project.
build.gradle of the java module
apply plugin: 'java'
Solution #1: Quick an dirty
I fixed it by setting my JAVA_HOME
back to 1.7:
export JAVA_HOME=`/usr/libexec/java_home -v 1.7`
Solution #2: change compiler version:
change back to 1.7 for this specific module in its build.gradle
apply plugin: 'java'
sourceCompatibility = 1.7
targetCompatibility = 1.7