java环境配置

http://www.linuxidc.com/Linux/2016-06/132678.htm
下载：
下载 jdk-8u91-linux-x64.tar.gz：
wget –no-check-certificate –no-cookies –header “Cookie: Oraclelicense=accept-securebackup-cookie” http://download.oracle.com/otn-pub/java/jdk/7u71-b14/jdk-7u71-linux-x64.rpm
wget –no-check-certificate –no-cookies –header “Cookie: oraclelicense=accept-securebackup-cookie” http://download.oracle.com/otn-pub/java/jdk/8u91-b14/jdk-8u91-linux-x64.tar.gz
wget –no-check-certificate –no-cookies –header “Cookie: oraclelicense=accept-securebackup-cookie” http://download.oracle.com/otn-pub/java/jdk/8u91-b14/jdk-8u91-linux-x64.rpm
wget –no-cookies –header “Cookie: oraclelicense=accept-securebackup-cookie;” http://download.oracle.com/otn-pub/java/jdk/7u65-b17/jdk-7u65-linux-x64.tar

mac os

linux

JAVA_HOME=/usr/local/jdk/jdk1.8.0_91
JRE_HOME=$JAVA_HOME/jre
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
CLASSPATH=:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib/dt.jar
export JAVA_HOME JRE_HOME PATH CLASSPATH

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#vi /etc/profile
#source /etc/profile
#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)

windows