centos6.5 jdk安装

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解压jdk-8u131-linux-x64.tar.gz包到 /usr/local/java/jdk1.8.0_131

tar -zxvf jdk-8u131-linux-x64.tar.gz

配置环境变量

vim /etc/profile
export JAVA_HOME=/usr/local/java/jdk1.8.0_131
export CLASSPATH=.:JAVAHOME/jre/lib/rt.jar:JAVA_HOME/lib/dt.jar:JAVAHOME/lib/tools.jarexportPATH=PATH:$JAVA_HOME/bin

编译即时生效

source /etc/profile

查看

[root@localhost java]# java -version
java version “1.8.0_131”
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)