oracle java - weakish/cheat GitHub Wiki

Get a tarball at java.com.

We use java-package to build a deb package.

sudo apt-get install java-package fakeroot
fakeroot make-jpkg jdk-8u25-linux-x64.tar.gz
sudo dpkg -i oracle-java8-jdk_8u25_amd64.deb

See what Java versions are instaled:

update-java-alternatives --list

If you have other Java installed:

update-alternatives --config java
update-alternatives --config javac

Make sure the correct Java is being used:

java -version