Step1.网上下载jdk
http://download.oracle.com/otn-pub/java/jdk/8u181-b13/96a7b8442fe848ef90c96a2fad6ed6d1/jdk-8u181-linux-x64.tar.gz
Step2.将下载的安装包解压到/usr/local目录
#tar -zvxf jdk-8u181-linux-x64.tar.gz
Step3.配置profile文件,即环境变量
#vim /etc/profile 添加如下内容:JAVA_HOME根据实际目录来 JAVA_HOME=/usr/local/jdk1.8 CLASSPATH=$JAVA_HOME/lib/ PATH=$PATH:$JAVA_HOME/bin export PATH JAVA_HOME CLASSPATH
Step4.使配置文件生效
#source /etc/profile
Step5.测试安装配置是否成功
# java -version java version "1.8.0_181" Java(TM) SE Runtime Environment (build 1.8.0_181-b13) Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)