Linux安装JDK-JZTXT

打开/etc/profile的文件，进行编辑

```shell

export JAVA_HOME=/opt/jdk1.8.0_211
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

```

立即生效/etc/profile里的配置

```json

source /etc/profile

```