JDK7在linux下安装及环境变量配置

使用wget下载到本地

//使用cookie模式下载
wget --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie;" http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.tar.gz

//修改环境变量配置文件
sudo nano ~/.bashrc

//在文件末尾加入下面的代码
export JAVA_HOME=/usr/local/java/jdk1.7.0_79
export JAVA=/usr/local/java/jdk1.7.0_79
export JRE_HOME=/usr/local/java/jdk1.7.0_79/jre
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib
export PATH=$JAVA_HOME/bin:$PATH

//应用新的环境变量
source ~/.bashrc