ubuntu10.04 install java7

卸载：

sudo apt-get purge openjdk*
sudo apt-get purge oracle-java7-installer*

安装：

sudo add-apt-repository ppa:webupd8team/java sudo apt-get update sudo apt-get install oracle-java7-installer

参考: 

http://stackoverflow.com/questions/16263556/installing-java7-on-ubuntu

http://www.docin.com/p-555035567.html