@H_404_1@1）下载jdk：http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
@H_404_1@2）放置到/usr/local/software/java 目录下，并解压 tar-xzv -f jdk*.gz
@H_404_1@3）配置环境变量
@H_404_1@vim /etc/profile
@H_404_1@追加如下内容并保存：
@H_404_1@export JAVA_HOME=/usr/local/software/java/jdk1.8.0_162
export JRE_HOME=/usr/local/software/java/jdk1.8.0_162/jre
export PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
@H_404_1@4）将java命令添加到bin @H_404_1@5）将javac命令添加到bin @H_404_1@6）选择jdk版本；
原文链接：https://www.f2er.com/centos/374462.htmlexport JRE_HOME=/usr/local/software/java/jdk1.8.0_162/jre
export PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
@H_404_1@4）将java命令添加到bin @H_404_1@5）将javac命令添加到bin @H_404_1@6）选择jdk版本；
[root@localhost jdk1.8.0_162]# update-alternatives --install /usr/bin/java java /usr/local/software/java/jdk1.8.0_162/ 300 [root@localhost jdk1.8.0_162]# update-alternatives --install /usr/bin/javac javac /usr/local/software/java/jdk1.8.0_162/bin/javac 300 [root@localhost jdk1.8.0_162]# update-alternatives --config java 共有 3 个程序提供“java”。 选择 命令 ----------------------------------------------- *+ 1 /usr/lib/jvm/jre-1.7.0-openjdk/bin/java 2 /usr/lib/jvm/jre-1.6.0-openjdk/bin/java 3 /usr/local/software/java/jdk1.8.0_162/ 按 Enter 来保存当前选择[+]，或键入选择号码：3@H_404_1@7）启用刚才的环境变量； @H_404_1@source /etc/profile @H_404_1@8）验证： java -version
[root@localhost jdk1.8.0_162]# source /etc/profile [root@localhost jdk1.8.0_162]# [root@localhost jdk1.8.0_162]# java -version java version "1.8.0_162" Java(TM) SE Runtime Environment (build 1.8.0_162-b12) Java HotSpot(TM) Server VM (build 25.162-b12,mixed mode)
