How to convert UTC timestamp to asia/jakarta time

Question

I have string timestamp like 2020-05-25 08:03:24

I have tried to split the String using " " (a whitespace) as delimiter to get two Strings "2020-05-25" and "08:03:24". After that, I used substring to get the hours and added 7 to have jakarta time.
But when it is 17:01:00 for example, my calculated date is wrong.
The date given is in UTC.

I want to convert it become timezone [ASIA/Jakarta] how to convert utc timestamp become asia jakarta time?

In addition to the good answer by deHaar below I recommend [this answer by Basil Bourque](https://stackoverflow.com/a/39692411/5772882). — Ole V.V., May 25 '20 at 15:09

deHaar · Accepted Answer · 2020-05-25T08:38:08.117

You can use java.time if you are using Java 8 or higher.

The library provides handy possibilities of converting datetimes that don't have information about a time zone (like your example String) to a zone and handle conversions from one zone to another.

See this example:

public static void main(String[] args) {
    // datetime string without a time zone or offset
    String utcTimestamp = "2020-05-25 08:03:24";
    // parse the datetime as it is to an object that only knows date and time (no zone)
    LocalDateTime datetimeWithoutZone = LocalDateTime.parse(utcTimestamp,
                                    DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
    // convert it to a zone-aware datetime object by adding a zone
    ZonedDateTime utcZdt = datetimeWithoutZone.atZone(ZoneId.of("UTC"));
    // print the datetime in utc once
    System.out.println(utcZdt);
    // then convert the zoned datetime to a different time zone
    ZonedDateTime asiaJakartaZdt = utcZdt.withZoneSameInstant(ZoneId.of("Asia/Jakarta"));
    // and print the result
    System.out.println(asiaJakartaZdt);
}

The output is

2020-05-25T08:03:24Z[UTC]
2020-05-25T15:03:24+07:00[Asia/Jakarta]

Oh thanks for that example – yuyu kungkung Jun 02 '20 at 02:57 — yuyu kungkung, Jun 02 '20 at 02:57
@yuyukungkung You're welcome... – deHaar Jun 02 '20 at 05:44 — deHaar, Jun 02 '20 at 05:44

How to convert UTC timestamp to asia/jakarta time

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