关于Ubuntu12.04 安装JAVA7时需要安装的更新命令，

关于Ubuntu12.04 安装JAVA7时需要安装的更新命令，

sudo update-alternatives --install /usr/bin/java java /usr/java/jdk1.7.0_25/bin/java 300
sudo update-alternatives --install /usr/bin/jar jar   /usr/java/jdk1.7.0_25/bin/jar 300
sudo update-alternatives --install /usr/bin/javah javah /usr/java/jdk1.7.0_25/bin/javah 300
sudo update-alternatives --install /usr/bin/javap javap /usr/java/jdk1.7.0_25/bin/javap 300
sudo update-alternatives --install /usr/bin/javac javac /usr/java/jdk1.7.0_25/bin/javac 300