Some code I need my friend to help with. The 1st line of code in main(String[] args) doesn't work but the 2nd does.

gistfile1.txt

public static void main(String[] args)
	{
		System.out.println(getNumberAtDigit(4532, 3));
		System.out.println(getNumbetAtDigit(4532, 4));
	}

/**
	 * Digits go from left to right, starting at 1
	 * 
	 * @param source
	 *            The number to get the digit from
	 * @param digit
	 *            The digit to get
	 * @return The number in the digit'th place in source
	 */
	public static int getNumberAtDigit(int source, int digit)
	{
		if(digit > getSize(source))
			throw new IndexOutOfBoundsException(
					"There aren't " + String.valueOf(digit) + " digits in " + String.valueOf(source) + ".");
		else
		{
			// Remove digits that come after what we want
			for(int i = getSize(source); i > digit; i--)
				source = (int) Math.floor(digit / 10);
			return source % 10;
		}
	}

	public static int getSize(long d)
	{
		String numberS = String.valueOf(d);
		return numberS.length();
	}