I want to install JDK 8, but during the execution of this command
sudo -E add-apt-repository ppa:webupd8team/java
I got this error
gpg: keybox '/tmp/tmplvej9x_g/pubring.gpg' created gpg: keyserver receive failed: No keyserver available
What a have to do? I'm new in linux.
Nota: I have proxy in my network and I did some configurations