Fetched 10.2 MB in 4s (2329 kB/s) Reading package lists... W: GPG error: http://ppa.launchpad.net xenial InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C2518248EEA14886 $ apt-get install oracle-java8-installer Reading package lists... Building dependency tree... Reading state information... E: Unable to locate package oracle-java8-installer ERROR: Job failed: exit code 1
