[java] Installing jdk8 on ubuntu- "unable to locate package" update doesn't fix

It's same as vikasdumca's steps, but thought to share the link.

run the following command

sudo apt-get install python-software-properties
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update

then

sudo apt-get install oracle-java8-installer

this would install oracle java 8 on ubuntu properly.

find it from this post

you can find more info on "Managing Java" or "Setting the "JAVA_HOME" environment variable" from the post.