CentOS安装Java环境(脚本一键式安装)

1、上传jdk-8u251-linux-x64.tar.gz到/opt/java目录下

2、在/opt/java目录下创建install.sh文件，内容如下：

#!/bin/bash
tar zxvf /opt/java/jdk-8u251-linux-x64.tar.gz -C /opt/java > /dev/null 2>&1
echo '# JAVA-8u251' >> /etc/profile
echo 'JAVA_HOME=/opt/java/jdk1.8.0_251' >> /etc/profile
echo 'JAVA_BIN=/opt/java/jdk1.8.0_251/bin' >> /etc/profile
echo 'PATH=$PATH:$JAVA_BIN' >> /etc/profile
echo 'CLASSPATH=$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar' >> /etc/profile
echo 'export JAVA_HOME JAVA_BIN PATH CLASSPATH' >> /etc/profile
source /etc/profile
echo "java is already installed,please open another session to test it "

3、执行install脚本即可

sh install.sh

本文地址：https://blog.csdn.net/joshho/article/details/109649284