Question

I know this is a very simple piece of code, but I can't figure out what is going wrong =(

Answer 1

http://pastebin.com/Lmzzx57Q

Answer 2

when you add 1 to a byte, java (tries to) convert to int b = b + 1;
if you increment it, it stays a byte b += 1;
don't ask why. nothing to see here. move along now.

Answer 3

http://ideone.com/qwAoe

I wonder if casting the 1 to a byte will also work

http://ideone.com/TiiY1 :(

Answer 4

From Java documentation you get this...

byte: The byte data type is an 8-bit signed two's complement integer. It has a minimum value of -128 and a maximum value of 127 (inclusive).

So, if you are doing an loop from 1 to 10, you can use byte i instead for int i.
You are getting an error because you are trying to and int to byte, which is a different data type for compiler.