How to Install Oracle Java 8 (JDK8 and JRE8) In Ubuntu 14.04, 13.10, 12.10, 12.04 and 10.04 Via PPA or Linux Mint How to Install Oracle Java 8 In Ubuntu 14.04, 13.10, 12.10, 12.04 and 10.04 Via PPA You can install Oracle Java 8 (JDK8 and JRE8) In Ubuntu 14.04, 13.10, 12.10, 12.04 and 10.04 Via PPA or Linux Mint machine easily Add the webupd8team PPA repository and install Oracle Java 7/8 using the following commands:
install Oracle Java 7
sudo add-apt-repository ppa:webupd8team/java sudo apt-get update sudo apt-get install oracle-java7-installer
install Oracle Java8
sudo add-apt-repository ppa:webupd8team/java sudo apt-get update sudo apt-get install oracle-java8-installer
Check your installation with this command
java -version
or
javac -version
Switching between Oracle Java 7 and Oracle Java 8
Switch to Oracle Java 8 (from Oracle java 7)
sudo update-java-alternatives -s java-8-oracle
switch to Oracle Java 8 (from Oracle java 7)
sudo update-java-alternatives -s java-7-oracle
should be under “sudo”
cpan App::cpanminus
cpanm Switch
Source http://www.webupd8.org/2012/09/install-oracle-java-8-in-ubuntu-via-ppa.html
It has touchpad compatible problem
To solve touchpad problem : TouchPad problem in Ubuntu
* Do not install nVidia graphic driver.
* In preference : display scale : 2.0
* Install unity-tweak
* Install dark theme.
* In dark themed ubuntu, default theme of geany attacks your eyes.
So you need to change geany theme to dark.
(1) download any dark theme for geany. ex) at here : Geany theme
(2) see description how to set theme : Repository