Ubuntu安装Java 8，ubuntu安装java

Ubuntu安装Java 8

1.添加源+安装

$ sudo add-apt-repository ppa:openjdk-r/ppa
$ sudo apt-get update
$ sudo apt-get install openjdk-8-jdk

2.检查版本信息

$ java -version

java version "1.8.0_101"
Java(TM) SE Runtime Environment (build 1.8.0_101-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.101-b13, mixed mode)

3.设置为默认jdk

$ sudo update-alternatives --config java

$sudo update-alternatives --config javac