下载:[http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html](http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html) **解压文件** ```bash tar -zxvf jdk-8u431-linux-x64.tar.gz -C /home/env/java/ ``` **设置环境变量** ```bash vim /etc/profile ``` 在文件最末尾加上 ```bash export JAVA_HOME=/home/env/java/jdk1.8.0_431 export JRE_HOME=${JAVA_HOME}/jre export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib export PATH=${JAVA_HOME}/bin:$PATH ``` 使环境变量生效 ```bash source /etc/profile ``` 配置软连接 ```bash ln -s /home/env/java/jdk1.8.0_431/bin/java /usr/bin/java ``` 检查 ```bash java -version ``` **删除软连接并重新配置** 确认现有软连接 ```bash ls -l /usr/bin/java ``` 删除 ```bash rm /usr/bin/java ``` 重新配置 ```bash ln -s /env/java/jdk-21.0.3/bin/java /usr/bin/java ``` Loading... 下载:[http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html](http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html) **解压文件** ```bash tar -zxvf jdk-8u431-linux-x64.tar.gz -C /home/env/java/ ``` **设置环境变量** ```bash vim /etc/profile ``` 在文件最末尾加上 ```bash export JAVA_HOME=/home/env/java/jdk1.8.0_431 export JRE_HOME=${JAVA_HOME}/jre export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib export PATH=${JAVA_HOME}/bin:$PATH ``` 使环境变量生效 ```bash source /etc/profile ``` 配置软连接 ```bash ln -s /home/env/java/jdk1.8.0_431/bin/java /usr/bin/java ``` 检查 ```bash java -version ``` **删除软连接并重新配置** 确认现有软连接 ```bash ls -l /usr/bin/java ``` 删除 ```bash rm /usr/bin/java ``` 重新配置 ```bash ln -s /env/java/jdk-21.0.3/bin/java /usr/bin/java ``` 最后修改:2024 年 12 月 27 日 © 允许规范转载 打赏 赞赏作者 支付宝微信 赞 如果觉得我的文章对你有用,请随意赞赏