Centos7下JDK1.8的安装

1.下载并上传并解压安装包

下载安装包上传到/usr/local目录

https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

2.配置环境变量

vi /etc/profile

在文件末尾添加环境变量信息

export JAVA_HOME=/usr/local/java/jdk1.8.0_211
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export ZX_HOME=/usr/local/xz
export PATH=$PATH:$JAVA_HOME/bin:$PATH:/usr/local/mongodb-linux-x86_64-3.0.1/bin:$PATH:$ZX_HOME/bin:$PATH:$P

3.使配置文件生效

. /etc/profile

4.查看按照是否成功

java -version