PUBLIC MARKS from pvergain with tags java & installation

To install proprietary Java, you must have the Multiverse repository enabled. Keep in mind that this repository is different from the backports Multiverse repository. That is, do not simply uncomment the "multiverse" line for backports. Instead, you will need to add "multiverse" to the existing main line in sources.list. For more information about the Multiverse repository, please visit the following guide: