Java String to DateTime

Question

I have a string from a json response:

start: \"2013-09-18T20:40:00+0000\",
end: \"2013-09-18T21:39:00+0000\",

How do i convert this string

Answer 1

You can create Joda DateTime object from the Java Date object, since Java does not have a DateTime class.

DateTime dt = new DateTime(start.getTime());

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Though the Date class of Java holds the time information as well(that's what you need in the first place), I suggest you to use a Calendar instead of the Date class of Java.

Calendar myCal = new GregorianCalendar();
myCal.setTime(date);

Have a look at the Calendar docs for more info on how you can use it more effectively.

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Things have changed and now even Java (Java 8 to be precise), has a LocalDateTime and ZonedDateTime class. For conversions, you can have a look at this SO answer(posting an excerpt from there).

Given: Date date = [some date]

(1) LocalDateTime << Instant<< Date

Instant instant = Instant.ofEpochMilli(date.getTime());
LocalDateTime ldt = LocalDateTime.ofInstant(instant, ZoneOffset.UTC);

(2) Date << Instant << LocalDateTime

Instant instant = ldt.toInstant(ZoneOffset.UTC);
Date date = Date.from(instant);