Ubuntu等Linux下命令行安装jdk8的方法

方法一：

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update


sudo apt-get install Oracle-java8-installer


方法二：

sudo add-apt-repository ppa:openjdk-r/ppa


sudo apt-get update 

sudo apt-get install openjdk-8-jdk

openjdk version "1.8.0_01-internal"
OpenJDK Runtime Environment (build 1.8.0_01-internal-b04)
OpenJDK 64-Bit Server VM (build 25.40-b08, mixed mode)


sudo update-alternatives --config java

sudo update-alternatives --config javac




java -version