Jdk

Open up the Terminal (Alt + F2 > Terminal). Remove OpenJDK installation. 1sudo apt-get update && apt-get remove openjdk* Download Oracle JDK from here. You are looking for a linux version with tar.gz extension. Also choose the right version from 32-bit (x86) and 64bit (x64) one. Change directory into one with downloaded tarball. In my case $HOME/Downloads. 1cd ~/Downloads Extract tarball. Replace with a name of dowloaded file. (just press Tab and it will be autocompleted.) 1tar -zxvf jdk- As a root create a folder in /opt where jdk will be stored. 1sudo mkdir -p /opt/java Move extracted folder to /opt/java. In my case, version number was 1.7.0_25. 1sudo mv jdk1.7.0_25 /opt/java Make JDK system default. 1sudo update-alternatives --install "/usr/bin/java" "java" "/opt/java/jdk1.7.0_25/bin/java" 1 2 3sudo update-alternatives --set java /opt/java/jdk1.7.0_25/bin/java Test installed java version. java version “1.7.0_25” Java(TM) SE Runtime Environment (build 1.7.0_25-b15) Java HotSpot(TM) 64-Bit Server VM (build 23.25-b01, mixed mode)