Centos7 安装 Java7

下载 jdk1.7

地址: http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html
点击下载后会出现一个新的地址
例子:http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.tar.gz
其中wget后面的地址就是这个地址.

mkdir /usr/local/download
cd /usr/local/download
wget http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.tar.gz

解压 tar

mkdir /usr/local/application
tar xzvf jdk-7u80-linux-x64.tar.gz
mv jdk1.7.0_80 /usr/local/application/java7

环境变量配置

sudo vim /etc/profile
export JAVA_HOME=/usr/local/application/java7
export JRE_HOME=/usr/local/application/java7/jre
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib:$CLASSPATH
export PATH=$PATH:$JAVA_HOME/bin

环境变量重载

source /etc/profile