CentOS-6.3安装配置JDK-8

JAVA_HOME=/usr/java/jdk1.8.0_45
JRE_HOME=/usr/java/jdk1.8.0_45/jre
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
export JAVA_HOME JRE_HOME PATH CLASSPATH 

[root@admin local]# source /etc/profile   //使修改立即生效
[root@admin local]#        echo $PATH   //查看PATH值 

[root@admin ~]# echo $PATH
/usr/local/cmake/bin:/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/java/jdk1.7.0/bin:/usr/java/jdk1.7.0/jre/bin:/root/bin 

CentOS-6.3安装配置JDK-8

原文：http://gengzg.iteye.com/blog/2221913