apk signed in debugging mode

I want to relase a game but when i uploaded apk to google playe its warning me you " you uploaded apk signed in debugging mode. Upload your APK in relase mode" I cant creating keystore in unity its giving error “unable to run keytool” i installed JDK but its givin error. And created keystore with cmd.

What JDK version do you have ? Cause JDK 1.7 don’t work with the signed apk system. You need to use JDK 1.6

check whether u give public key or not?