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 show the problem:
Error:Execution failed for task ':app:dexDebug'.
com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.8.0_40\bin\java.exe'' finished with non-zero exit value 2
How can I solve it?Please help!