ubuntu安装jdk

#执行命令
mkdir /usr/local/java
#执行命令
tar -zxvf /home/tiankafei/jdk-8u211-linux-x64.tar.gz -C /usr/local/java
rm -rf /home/tiankafei/jdk-8u211-linux-x64.tar.gz

#执行命令
vim .bashrc
#更改内容
export JAVA_HOME=/usr/local/java/jdk1.8.0_211
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

#执行命令立即生效
source .bashrc