Install Oracle Java on Ubuntu

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Ubuntu comes with an opensource java installed. To use the oracle’s java,
you need to remove the openjkd and install oracle’s.

First we need to remove the openjdk from Ubuntu.

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sudo apt-get purge openjdk*

Then add webupd8team repository, since Oracle still don’t have an official repository.

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sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update

After the update finished, we can install java via:

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sudo apt-get install oracle-java8-installer