(Mark) (Ubuntu)Ubuntu 12.04 LTS 通过ppa安装oracle JDK (Linux) (Java)

引用webupd8官方介绍 http://www.webupd8.org/2012/01/install-oracle-java-jdk-7-in-ubuntu-via.html

To add our PPA and install the latest Oracle Java 7 in Ubuntu (supports Ubuntu 13.10, 13.04, 12.10, 12.04 and 10.04) or Linux Mint

安装：

sudo add-apt-repository ppa:webupd8team/java

sudo apt-get update

sudo apt-get install oracle-java8-installer

安装后查看版本：

$ java -version

java version "1.8.0-ea"

$ javac -version

javac 1.8.0-ea

Debian安装Oracle Java 8 ( JDK8 和 JRE8)

 su - echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu precise main"

 > /etc/apt/sources.list.d/webupd8team-java.list

echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu precise main"

 >> /etc/apt/sources.list.d/webupd8team-java.list

apt-key adv --keyserver keyserver.ubuntu.com --recv-keys EEA14886

apt-get update

apt-get install oracle-java8-installer exit

在Oracle Java 8 和 Java 7 间切换：

sudo update-java-alternatives -s java-7-oracle

sudo update-java-alternatives -s java-8-oracle

卸载

sudo apt-get remove oracle-java8-installer