1.官网或wget下载 jdk-8u172-linux-x64.tar.gz,解压到/usr/local/java目录:
cd /home/tar
wget xxxxxxx
cp /home/tar/jdk-8u172-linux-x64.tar.gz /usr/local/java
cd /usr/local/java
tar -zxvf jdk-8u172-linux-x64.tar.gz
2.写入系统配置项:
vi /etc/profile
在profile文件加入以下内容:
------------------------------------------
JAVA_HOME=/usr/local/java/jdk1.8.0_172
CLASSPATH=$JAVA_HOME/lib/
PATH=/$PATH:$JAVA_HOME/bin
export PATH JAVA_HOME CLASSPATH
3.让配置生效:
source /etc/profile
java -version