Q: Why do I get this JRE JDK error message? Package icedtea-8-plugin is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'icedtea-8-plugin' has no installation candidate


A: To make sure that Package 'icedtea-8-plugin' has an installation candidate, make sure that your Software & Updates app is set like shown below. The multiverse repository should be checkmarked. When you close the window, it'll ask you for permission to reload the software database... please go ahead and approve.
Then, in terminal, do the following to install the missing software:
note: the sudo apt-get update is redundant, but it's good to be sure it got done.


*

*sudo apt-get update

*sudo apt-get install icedtea-8-plugin

