java安装，

java安装，

uname -a 查看linux版本

http://www.oracle.com/technetwork/java/javase/downloads/index.html  下载jdk

rpm -ivh jdk-8u91-linux-x64.rpm

whereis java 查找java安装目录

vi /etc/profile

# set Java environment
JAVA_HOME=/usr/java/jdk1.8.0_91
JRE_HOME=/usr/java/jdk1.8.0_91/jre
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin;
CLASSPATH=$CLASSPATH:$PATH:$JAVA_HOME/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib:$JRE_HOME/lib:.
export JAVA_HOME
export JRE_HOME
export PATH
export CLASSPATH

source /et c/profile

java -version