# 下载OpenJDK 8的二进制包

wget https://download.java.net/openjdk/jdk8u41/ri/openjdk-8u41-b04-linux-x64-14_jan_2020.tar.gz

# 解压缩下载的包

tar xzf openjdk-8u41-b04-linux-x64-14_jan_2020.tar.gz

# 移动解压后的JDK到/usr/lib/jvm/目录

sudo mv openjdk-8u41-b04-linux-x64-14_jan_2020 /usr/lib/jvm/openjdk8

# 设置环境变量

echo 'export JAVA_HOME=/usr/lib/jvm/openjdk8' | sudo tee -a /etc/profile

echo 'export JRE_HOME=${JAVA_HOME}/jre' | sudo tee -a /etc/profile

echo 'export PATH=${PATH}:${JAVA_HOME}/bin:${JRE_HOME}/bin' | sudo tee -a /etc/profile

# 更新环境变量

source /etc/profile

# 验证安装

java -version