Review

class CharUtils {
    /**
     * <p>Converts the character to the Integer it represents, throwing an
     * exception if the character is not numeric.</p>
     * 
     * <p>This method coverts the char '1' to the int 1 and so on.</p>
     *
     * <pre>
     *   CharUtils.toIntValue('3', -1)  = 3
     *   CharUtils.toIntValue('A', -1)  = -1
     * </pre>
     *
     * @param ch  the character to convert
     * @param defaultValue  the default value to use if the character is not numeric
     * @return the int value of the character
     */
    public static int toIntValue(char ch, int defaultValue) {
        if (isAsciiNumeric(ch) == false) {
            return defaultValue;
        }
        return ch - 48;
    }

}