public static String getCookieHeaderName(Cookie cookie) 
{
        int version = cookie.getVersion();
        if (version == 1) {
            return "Set-Cookie2";
        } else {
            return "Set-Cookie";
        }
}

Return the header name to set the cookie, based on cookie version

 public static String getCookieHeaderValue(Cookie cookie) 
{
        StringBuffer buf = new StringBuffer();
        getCookieHeaderValue( cookie, buf );
        return buf.toString();
}

Return the header value used to set this cookie

 public static  void getCookieHeaderValue(Cookie cookie,
    StringBuffer buf) 
{
        int version = cookie.getVersion();
        // this part is the same for all cookies
        String name = cookie.getName();     // Avoid NPE on malformed cookies
        if (name == null)
            name = "";
        String value = cookie.getValue();
        if (value == null)
            value = "";
        buf.append(name);
        buf.append("=");
        maybeQuote(version, buf, value);
        // add version 1 specific information
        if (version == 1) {
            // Version=1 ... required
            buf.append ("; Version=1");
            // Comment=comment
            if (cookie.getComment() != null) {
                buf.append ("; Comment=");
                maybeQuote (version, buf, cookie.getComment());
            }
        }
        // add domain information, if present
        if (cookie.getDomain() != null) {
            buf.append("; Domain=");
            maybeQuote (version, buf, cookie.getDomain());
        }
        // Max-Age=secs/Discard ... or use old "Expires" format
        if (cookie.getMaxAge()  >= 0) {
            if (version == 0) {
                buf.append ("; Expires=");
                if (cookie.getMaxAge() == 0)
                    DateTool.oldCookieFormat.format(new Date(10000), buf,
                                                    new FieldPosition(0));
                else
                    DateTool.oldCookieFormat.format
                        (new Date( System.currentTimeMillis() +
                                   cookie.getMaxAge() *1000L), buf,
                         new FieldPosition(0));
            } else {
                buf.append ("; Max-Age=");
                buf.append (cookie.getMaxAge());
            }
        } else if (version == 1)
          buf.append ("; Discard");
        // Path=path
        if (cookie.getPath() != null) {
            buf.append ("; Path=");
            maybeQuote (version, buf, cookie.getPath());
        }
        // Secure
        if (cookie.getSecure()) {
          buf.append ("; Secure");
        }
}

Return the header value used to set this cookie

 static  void maybeQuote(int version,
    StringBuffer buf,
    String value) 
{
        if (version == 0 || isToken (value))
            buf.append (value);
        else {
            buf.append ('"");
            buf.append (value);
            buf.append ('"");
        }
}