/**

     * Parses the string argument as a signed integer in the radix

     * specified by the second argument. The characters in the string

     * must all be digits of the specified radix (as determined by

     * whether {@link java.lang.Character#digit(char, int)} returns a

     * nonnegative value), except that the first character may be an

     * ASCII minus sign {@code '-'} (<code>'\u002D'</code>) to

     * indicate a negative value or an ASCII plus sign {@code '+'}

     * (<code>'\u002B'</code>) to indicate a positive value. The

     * resulting integer value is returned.

     *

     * <p>An exception of type {@code NumberFormatException} is

     * thrown if any of the following situations occurs:

     * <ul>

     * <li>The first argument is {@code null} or is a string of

     * length zero.

     *

     * <li>The radix is either smaller than

     * {@link java.lang.Character#MIN_RADIX} or

     * larger than {@link java.lang.Character#MAX_RADIX}.

     *

     * <li>Any character of the string is not a digit of the specified

     * radix, except that the first character may be a minus sign

     * {@code '-'} (<code>'\u002D'</code>) or plus sign

     * {@code '+'} (<code>'\u002B'</code>) provided that the

     * string is longer than length 1.

     *

     * <li>The value represented by the string is not a value of type

     * {@code int}.

     * </ul>

     *

     * <p>Examples:

     * <blockquote><pre>

     * parseInt("0", 10) returns 0

     * parseInt("473", 10) returns 473

     * parseInt("+42", 10) returns 42

     * parseInt("-0", 10) returns 0

     * parseInt("-FF", 16) returns -255

     * parseInt("1100110", 2) returns 102

     * parseInt("2147483647", 10) returns 2147483647

     * parseInt("-2147483648", 10) returns -2147483648

     * parseInt("2147483648", 10) throws a NumberFormatException

     * parseInt("99", 8) throws a NumberFormatException

     * parseInt("Kona", 10) throws a NumberFormatException

     * parseInt("Kona", 27) returns 411787

     * </pre></blockquote>

     *

     * @param      s   the {@code String} containing the integer

     *                  representation to be parsed

     * @param      radix   the radix to be used while parsing {@code s}.

     * @return     the integer represented by the string argument in the

     *             specified radix.

     * @exception  NumberFormatException if the {@code String}

     *             does not contain a parsable {@code int}.

     */

    public static int parseInt(String s, int radix)

                throws NumberFormatException {

    }

    public static Integer valueOf(String s) throws NumberFormatException {

        return Integer.valueOf(parseInt(s, 10));

    }

    public static Integer valueOf(int i) {

        assert IntegerCache.high >= 127;

        if (i >= IntegerCache.low && i <= IntegerCache.high)

            return IntegerCache.cache[i + (-IntegerCache.low)];

        return new Integer(i);

    }