Android sqlite - change default db rights by Java code

Each time my app updates the data of my DB, default rights are RW-RW----!

So each time I want to export my DB from Eclipse-DDMS to my PC, to check, I first have to make a chmod 777 on the .db file (adb shell), to restore the RWXRWXRWX rights.

That's not really fun!

So my question is: how could I do, in my Java code, to make a kind of "chmod 777", after all DB updates?

I already checked-out the SQLiteOpenHelper & Database classes, but found no functions dealing with the right...