Installing Java 8 on cloud9

Question

I'm trying to install java 8 on cloud9 through the webupd8 PPA. So I'm adding the repository

sudo add-apt-repository ppa:webupd8team/java

Next I do the update and finally when I run the command

sudo apt-get install oracle-java8-installer

I get the error

E: Unable to locate package oracle-java8-installer

Any ideas how can I get through that and istall java 8 on cloud9?

Answer 1

As noted by christophetd, I completed the following steps and everything installed without issue:

$ sudo vim /etc/apt/sources.list

Add the following lines of code to the file:

deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main
deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main

$ sudo apt-get update

$ sudo add-apt-repository ppa:webupd8team/java

$ sudo apt-get install oracle-java8-installer

$ java -version

java version "1.8.0_101"

Answer 2

Add the two following lines to your file /etc/apt/sources.list (which you can create if it does not exist)

deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main
deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main

Then run sudo apt-get update, and you should be able to install oracle-java8-installer.

This basically does the add-apt-repository manually. I suspect the issue is due to the fact that the default source files /etc/apt/sources.list.d/* are mounted as read-only (see for instance this topic on Cloud9 community)