CODEWITHSUNDEEP
javajodatime
KingTravisG
KingTravisG

Reputation: 1336

Convert date from one timezone to local timezone

I am using Java 8 and attempting to convert a timestamp from one time zone to another. The time stamp will be in the user's time zone e.g. 

//  2016-04-11T12:00:00Z
long sourceTime = 1460372400000L;
timezoneConverter(sourceTime, "America/New_York");

However, when using Joda time, or Java 8 LocalDateTime/Instant, when I pass the timestamp it is adjusted to the user's time zone - I don't need this to happen, as it is already in the user's timezone (all timestamps will be sent in the user's local time).

ZonedDateTime zdt = 
    ZonedDateTime.ofInstant(Instant.ofEpochMilli(1460372400000L),
                            ZoneId.of("America/New_York"))

results in

2016-04-11T07:00-04:00[America/New_York]

instead of

2016-04-11T12:00-04:00[America/New_York]

Is there any way around this?

Thanks!

Upvotes: 0

Views: 97

Answers (2)

Asad Rao
Asad Rao

Reputation: 3250

long sourceTime = 1460372400000L;
//Select your timezone
TimeZone utcTimeZone = TimeZone.getTimeZone("UTC");
Calendar calendar = new GregorianCalendar(utcTimeZone);
calendar.setTimeInMillis(sourceTime);

//Get Current Time Zone

LocalTime time = LocalTime.now();
System.out.println("Local Time Zone: "+ZoneId.systemDefault().toString());
System.out.println("Current local time : " + time);

Upvotes: 0

Peter Lawrey
Peter Lawrey

Reputation: 533432

1460372400000L is Mon, 11 Apr 2016 11:00:00 GMT or Mon, 11 Apr 2016 12:00:00 BST

2016-04-11T11:00:00Z is 2016-04-11T07:00-04:00[America/New_York] so you are converting from one time zone to another.

If you just want the local time zone, I suggest you use LocalDateTime

LocalDateTime dt = LocalDateTime.ofEpochSecond(1460376000L, 0 ,  ZoneOffset.ofHours(0));
System.out.println(dt);

prints

2016-04-11T12:00

Upvotes: 1

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