linux 环境下安装jdk

 vim ~/.bashrc

# 配置jdk
export JAVA_HOME=/usr/soft/java/jdk1.8.0_201  
export CLASSPATH=.:${JAVA_HOME}/lib
export PATH=${JAVA_HOME}/bin:${JAVA_HOME}/jre/bin:${PATH}

# 若需要永久生效，则需要执行如下操作
source ~/.bashrc