Gradle build failed : bad class file magic (cafebabe) or version (0034.0000)

[ClemMahe]

Hi,

I have some issued when checking out the projet and opening with Android Studio 1.5.1 or Android Studio 2.1 preview 5.
With Android Studio 1.5.1 i tried to run the project with JDK 1.8.0_05 and i got the following error "Error:com.android.dx.cf.iface.ParseException: bad class file magic (cafebabe) or version (0034.0000)".
With Android Studio 2.1 preview 5 same error.
If i try to change compileOptions i have other errors.

Do you have any ideas why this is happening ?
Thanks.

Regards

[ClemMahe]

Well, adding below "apply plugin : 'java' " in model/build.gradle and domain/build.gradle the following lines seems to allow gradle to compile.
sourceCompatibility = 1.7
targetCompatibility = 1.7

I now have an error with Dagger and generated classes.