1.linux System Installation ORACLEJDK

This section will show you how to install Oracle JDK in Linux instead of open JDK

1. Download the JDK to Oracle website: http://www.oracle.com/technetwork/java/javase/downloads/index.html

2. Unzip the JDK TAR-XVF jdk-8-linux-i586.tar.gz (32-bit) tar-xvf jdk-8-linux-x64.tar.gz (64-bit) or simply use the Unzip tool to freely

3. Move the extracted files to/usr/lib

sudo mkdir-p/USR/LIB/JVM  ---Create a new JVM folder

sudo mv  ./jdk1.8.0/usr/lib/jvm/---To move the JDK folder to/usr/lib

4. Enter the command on the command line as follows

Atives--install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.8.0/bin/java" 1

sudo update-alternatives--install "/usr/bin/javac" "Javac" "/usr/lib/jvm/jdk1.8.0/bin/javac" 1

sudo update-alternatives--install "/usr/bin/javaws" "Javaws" "/usr/lib/jvm/jdk1.8.0/bin/javaws" 1

The following 1 represents the priority, and subsequent installations replace the currently installed version as the default version

5. Give permission

sudo chmod a+x/usr/bin/javasudo chmod a+x/usr/bin/javacsudo chmod a+x/usr/bin/javawssudo chown-r root:root/usr/lib/jv m/jdk1.8.0

6. List all JDK versions of the current system installation, select a run, and if the JDK is installed for the first time, the current JDK will be run

sudo update-alternatives--config javasudo update-alternatives--config javacsudo update-alternatives--config javaws

Reference URL: Http://askubuntu.com/questions/56104/how-can-i-install-sun-oracles-proprietary-java-jdk-6-7-8-or-jre

1.linux System Installation ORACLEJDK