Return first digit of an integer

Question

How in Java do you return the first digit of an integer.?

i.e.

345

Returns an int of 3.

Answer 1

The missing recursive solution:

int getFirstInt(int input) {
  if (input > 0 ? input < 10 : input > -10) {
    return input > 0 ? input : -input;
  }
  return getFirstInt(input / 10);
}

I wouldn't use the ternary operator in real life but - isn't it kind of beautiful? ;)