一、在線下載JDK
1、創建新文件夾:sudo mkdir /usr/local/java
2、進入要存放文件的目錄:cd;
3、在線下載JDK: sudo curl -o jdk-8u121-linux-x64.tar.gz -L --cookie "oraclelicense=accept-securebackup-cookie" http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html;
3.1在線下載方法2: sudo wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u101-b13/jdk-8u101-linux-x64.tar.gz。注意http地址是“下載頁面的裏對應JDK文件的鏈接地址”,所以之前的地址是錯誤的!!!
4、解壓:sudo tar -zxvf jdk-8u121-linux-x64.tar.gz -C /usr/local/java;
5、修改環境變量
sudo vim ~/.bashrc
注:vim使用查看其它博文。
文件的末尾追加下面內容:
#set oracle jdk environment
export JAVA_HOME=/usr/local/java/jdk1.8.0_121 # 這裏的目錄要換成你解壓的JDK 目錄 export JRE_HOME=${JAVA_HOME}/jre export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib export PATH=${JAVA_HOME}/bin:$PATH
source ~/.bashrc