java install

mkdir /usr/local/java/jdk1.8.0_371
cd /usr/local/java/jdk1.8.0_371

tar -zxvf jdk-8u211-linux-x64.tar.gz

vim /etc/profile
在profile的最下面添加，下面的JAVA_HOME是JDK安装包解压后的文件夹目录

JAVA_HOME=/usr/java/jdk1.8.0_60

PATH=$JAVA_HOME/bin:$PATH

CLASSPATH=$JAVA_HOME/jre/lib/ext:$JAVA_HOME/lib/tools.jar

export PATH JAVA_HOME CLASSPATH