- Follow the steps in last article "Install Java 1.7.0 on ubuntu 11.10" to download JDK7, un-compress and move to /usr/lib/jvm/jdk1.7.0.
- Check the installed javac
$ sudo update-alternatives --config javac
For a flash installed Ubuntu, there should be no javac installed.
- Install javac
$ sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.7.0/bin/javac 1
Note: The last parameter is "priority", it is an integer; options with higher numbers have higher priority in automatic mode.
