在Linux安装JDK1.7

亲试有用：http://blog.csdn.net/zth1002/article/details/51383508

 

 

sudo update-alternatives --install /usr/bin/java java /opt/jdk1.8/bin/java 300

sudo update-alternatives --install /usr/bin/javac javac /opt/jdk1.8/bin/javac 300

sudo update-alternatives --config java