* See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.http

import java.text.DateFormat
import java.text.ParsePosition
import java.text.SimpleDateFormat
import java.util.Date
import java.util.Locale
import okhttp3.internal.UTC

/** The last four-digit year: "Fri, 31 Dec 9999 23:59:59 GMT". */

     * @param format
     *            {@link DateFormat}
     * @return 変換された{@link Date}
     */
    protected static Date toDate(final String str, final DateFormat format) {
        final ParsePosition pos = new ParsePosition(0);
        final Date date = format.parse(str, pos);
        if (date == null) {
            return null;
        }
        final int index = pos.getIndex();
        if (index == 0) {

     * @param format
     *            {@link DateFormat}
     * @return 変換された{@link Date}
     */
    protected static Date toDate(final String str, final DateFormat format) {
        final ParsePosition pos = new ParsePosition(0);
        final Date date = format.parse(str, pos);
        if (date == null) {
            return null;
        }
        final int index = pos.getIndex();
        if (index == 0) {

     * @param format
     *            {@link DateFormat}
     * @return 変換された{@link Date}
     */
    protected static Date toDate(final String str, final DateFormat format) {
        final ParsePosition pos = new ParsePosition(0);
        final Date date = format.parse(str, pos);
        if (date == null) {
            return null;
        }
        final int index = pos.getIndex();
        if (index == 0) {