CentOS 6.5 安装jdk

# cd /opt/java/

#wget http://download.oracle.com/otn-pub/java/jdk/8u91-b14/jdk-8u91-linux-x64.tar.gz

#tar -zxvf jdk-8u91-linux-x64.tar.gz

修改 /etc/profile 

#JAVA HOME
JAVA_HOME=/usr/local/java/jdk1.8.0_91
PATH=$PATH:$JAVA_HOME/bin
export JAVA_HOME PATH

引用

[root@iZ11ez4q5vcZ jdk1.8.0_91]# source /etc/profile
[root@iZ11ez4q5vcZ jdk1.8.0_91]# ln -s /usr/local/java/jdk1.8.0_91/bin/java /sbin/java
[root@iZ11ez4q5vcZ jdk1.8.0_91]# java -version 

java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)