How to convert GMT Timestamp to ISO8601 ?

      TimeZone and Date Conversion using Java 8 APIs:

        GMT Timestamp to ISO8601 :

-------------------------------- ConvertUtilTest.java-----------------------

import java.sql.Timestamp;

import java.time.ZoneId;

import java.time.ZonedDateTime;

import java.util.TimeZone;

public class ConvertUtilTest {

       public static void main(String[] args) {

              ConvertUtilTest convertUtilTest = new ConvertUtilTest();

              convertUtilTest.convertGmtTimestampToIso8601();

             

       }

       public void convertGmtTimestampToIso8601() {

              // Parameters:year the year minus 1900month 0 to 11date 1 to 31hour 0 to

              // 23minute 0 to 59second 0 to 59nano 0 to 999,999,999

              Timestamp testTimestamp = new Timestamp(111, 11, 3, 2, 15, 30, 0);

String result = ConvertDate.convertGmtTimestampToIso8601(testTimestamp, "Asia/Tokyo");

              System.out.println(" convertGmtTimestampToIso8601 :  " + result);

       }

}

--------------------------- ConvertDate.java---------------

public class ConvertDate {

       public static String convertGmtTimestampToIso8601(Timestamp gmtTimestamp, String currentTimeZone) {

              String isoTime = null;

              if (gmtTimestamp != null) {

                     LocalDateTime gmtLocalDateTime = gmtTimestamp.toLocalDateTime();

                     TimeZone timeZone = TimeZone.getTimeZone(currentTimeZone);

                     ZoneId currentTimeZoneId = timeZone.toZoneId();

                     if (currentTimeZone != null) {

                           ZonedDateTime gmtZonedDateTime = ZonedDateTime.of(gmtLocalDateTime, ZoneId.of("GMT"));

                           isoTime = gmtZonedDateTime.withZoneSameInstant(currentTimeZoneId).format(DateTimeFormatter.ISO_OFFSET_DATE_TIME);

                     }

              }

              return isoTime;

       }

}

Output :

convertGmtTimestampToIso8601 :  2011-12-03T11:15:30+09:00

More Conversion:

Convert ZoneDateTime to ISO8601 ?

Convert ISO8601 to GMT Timestamp?



Convet ZoneDateTime from ISO8601 ?