Why it don't print anything into part-00000 file

[Luiz]

Hi people,

I wrote this code to implemment per-term indexing (Ivory), like figure 4 of 
paper http://www.dcs.gla.ac.uk/~richardm/papers/IPM_MapReduce.pdf but it don't 
print anything into part-00000 file.

Does somebody know why it don't print anything?

WordCount.java
Description: Binary data

Thanks in advance!

Luiz