- openjdk
sudo add-apt-repository ppa:openjdk-r/ppa
sudo apt-get update
sudo apt-get install openjdk-6-jdk
sudo apt-get install openjdk-7-jdk
sudo apt-get install openjdk-8-jdk - Oracle jdk
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java6-installer
sudo apt-get install oracle-java7-installer
sudo apt-get install oracle-java8-installer - 切换jdk版本
sudo update-alternatives --config java
sudo update-alternatives --config javac
ps: 安装炒鸡慢!!!!!!
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