"dpkg was interrupted" when trying to install Java 9 after adding PPA [duplicate]

I tried to install Java several times. but dpkg was interrupted. I do not know what it means.

1 Answer

You might have got broken software. Without fixing this, installation is impossible.

To fix, press Ctrl+Alt+T and do:

sudo dpkg --configure -a

as dpkg says...

Then proceed to installing Java by apt.