Pair.java not found, getOneSection Method not found neither...

[Google Code Exporter]

What steps will reproduce the problem?
1. Download the repository
2. try to run it, at compilation it will throw the error multiple markers at 
this line
    - Pair cannot be resolved to a type
    Data.java line 13
3.


Where this class and the getOneSection method are?

Original issue reported on code.google.com by [e-mail] on 21 Feb 2013 at 7:14