Puzzling Program!

[Xenorosth]

In short, this is a small black box for a program (ugly I know) I plan to make that will consist of a massive collection of these.

Anyway. HERE is a program I made in java. It hides a sentence. You put something in, it spits it out.

There are a few bits of information that I will give you.

1. The answer is a sentence that ends in a period.

2. And incorrect characters will result in massively distorted results to itself, and minorly distorted results to the character left and right.

If the answer is cat and you put in cct, you get dgu. (2 character away results in the left character character being off by 1, the middle character being off by 4, and the right character off by 1).

First 3 people to private message me with the correct sentence will receive a credit prize!

Each one will get 30k credits! Good luck. You'll need it.

In short, this is an experiment, just to see how well a puzzle like this would work/how easy it is to solve.