1. 获取JDK下载链接
https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
2. 下载JDK
mkdir /usr/local/software
wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" -O /usr/local/software/jdk-8u.tar.gz JDK下载链接
tar -zxvf /usr/local/software/jdk-8u.tar.gz -C /usr/local
mv /usr/local/jdk* /usr/local/jdk
3. 配置JAVA
vim /etc/profile
JAVA_HOME=/usr/local/jdk
JRE_HOME=/usr/local/jdk/jre
CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
export PATH JAVA_HOME JRE_HOME CLASSPATH
source /etc/profile #加载配置使生效
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