jdk7安装及环境配置 - cheyiliu/All-in-One GitHub Wiki

  1. 下载jdk版本， 我下载的32位.tar.gz包 http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html

  2. 解压到我的主目录/dev_env下

  3. 执行

     3  sudo update-alternatives --install /usr/bin/java  java  /home/yong/dev_env/jdk1.7.0_71/bin/java  700
 4  sudo update-alternatives --install /usr/bin/javac javac /home/yong/dev_env/jdk1.7.0_71/bin/javac 700
 5  sudo update-alternatives --install /usr/bin/jar   jar   /home/yong/dev_env/jdk1.7.0_71/bin/jar   700
 6  java -version
 7  sudo update-alternatives --config java

  4. 大功告成