centos安装jdk

1.先把jdk-8u211-linux-x64.tar.gz上传到centos

2.解压缩到/usr/local/java目录

3.编辑/etc/profile文件,最末尾添加下面的脚本

#java environment
export JAVA_HOME=/usr/local/java/jdk1.8.0_211
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin