Ubuntu 16.04 jdk 安装和配置

下载jdk-8u121,
新建文件夹

sudo mkdir /usr/local/javasudo cp /home/qi/software/jdk-8u121-linux-x64.gz /usr/local/javasudo tar -zxvf jdk-8u121-linux-x64.gzsudo gedit ~/.bashrc

环境变量：

export JAVA_HOME=/usr/local/java/jdk1.8.0_121export JRE_HOME=${JAVA_HOME}/jreexport CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/libexport PATH=${JAVA_HOME}/bin:$PATH

查看java版本：