Error:Execution failed for task ':app:dexDebug'. > comcommand finished with non-zero exit value 2

Question

In android studio I implement push notification. I downloaded a demo and import in android studio. There is no problem in source code but when I run this program it will sh

Answer 1

Not sure if you've tried it yet, but I removed the .bin and .lock files from the .gradle folder (but kept cache.xml) and it built successfully! Problem solved for me.

I switched to JDK 7 but it didn't change anything so back to version 8.