public static boolean parseBoolean(String s)
    {
        switch (s.length())
        {
            case 1:
            {
                char ch0 = s.charAt(0);
                if (ch0 == 'y' || ch0 == 'Y' || ch0 == '1')
                    return true;
                if (ch0 == 'n' || ch0 == 'N' || ch0 == '0')
                    return false;
                break;
            }
            case 2:
            {
                char ch0 = s.charAt(0);
                char ch1 = s.charAt(1);
                if ((ch0 == 'o' || ch0 == 'O') && (ch1 == 'n' || ch1 == 'N'))
                    return true;
                if ((ch0 == 'n' || ch0 == 'N') && (ch1 == 'o' || ch1 == 'O'))
                    return false;
                break;
            }
            case 3:
            {
                char ch0 = s.charAt(0);
                char ch1 = s.charAt(1);
                char ch2 = s.charAt(2);
                if ((ch0 == 'y' || ch0 == 'Y') && (ch1 == 'e' || ch1 == 'E') && (ch2 == 's' || ch2 == 'S'))
                    return true;
                if ((ch0 == 'o' || ch0 == 'O') && (ch1 == 'f' || ch1 == 'F') && (ch2 == 'f' || ch2 == 'F'))
                    return false;
                break;
            }
            case 4:
            {
                char ch0 = s.charAt(0);
                char ch1 = s.charAt(1);
                char ch2 = s.charAt(2);
                char ch3 = s.charAt(3);
                if ((ch0 == 't' || ch0 == 'T') && (ch1 == 'r' || ch1 == 'R') && (ch2 == 'u' || ch2 == 'U') && (ch3 == 'e' || ch3 == 'E'))
                    return true;
                break;
            }
            case 5:
            {
                char ch0 = s.charAt(0);
                char ch1 = s.charAt(1);
                char ch2 = s.charAt(2);
                char ch3 = s.charAt(3);
                char ch4 = s.charAt(4);
                if ((ch0 == 'f' || ch0 == 'F') && (ch1 == 'a' || ch1 == 'A') && (ch2 == 'l' || ch2 == 'L') && (ch3 == 's' || ch3 == 'S') && (ch4 == 'e' || ch4 == 'E'))
                    return false;
                break;
            }
        }

        throw new IllegalArgumentException("For input string: \"" + s + "\"");
    }