What is this?

Have you ever thought: "Man, I wonder if there are any numbers that only contain 69 and 420, which are divisible by both 69 and 420"?

If the answer is no, this program is for you.

How does it work?

A nice number is a number that only contains 69 and 420, while also being divisible by both. One such number is 420696969420420420.

By using the magic of BigIntegers and permutations, this program computes and prints nice numbers until it stops.

When does the program stop?

The program will stop when random people will stop asking me to fix their broken printers just because I'm a programmer.

That is, never.

Why?

Why not?

License?

I don't know who would want this, but sure: you can do whatever the @#$% you want with this program.

The code is an ugly mess anyway. Just make sure to change the package name.

Anything else?

Thanks to Zabo, the madlad who came up with this idea.