I have this datestring:
2011-11-01T13:00:00.000
and I don't seem to get that one parsed no matter
if I try SimpleDateformat or the DateTimeformatter
My last try is this one:
LocalDateTime datetime = LocalDateTime.parse(
deliverydate,
DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.S"));
But that gives me an error on index 21. Do I simply need to substring that datestring since I actually only care about the date and not the time?
You've specified one digit of subsecond precision - but you've got three. Use SSS and it's fine:
String text = "2011-11-01T13:00:00.000";
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSS");
LocalDateTime datetime = LocalDateTime.parse(text, formatter);
Also note how much more readable the code is when you separate out "creating the formatter" from "parsing the value".
Unlike SimpleDateFormat, DateTimeFormatter is immutable and thread-safe, so if you need to use this more than once I'd suggest extracting it to a static final field:
private static final DateTimeFormatter DELIVERY_DATE_FORMATTER =
DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSS", Locale.ROOT);
Java 7/8 is ISO 8601 compliant
The best solution for Java 7 ( see @Jon post for Java 8 )
DateFormat df1 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS");
String string1 = "2016-06-21T12:08:56.235";
Date result1 = df1.parse(string1);
You can find more examples in section Examples at SimpleDateFormat javadoc.
java.time API, and there's no reason to take the retrograde step of going back to java.util.* here - it's just a matter of fixing the format pattern.
java.time and their problematic code can be fixed very easily to keep using it, I don't think it's a good idea to suggest they go back to the truly awful java.util.Date API. (Additionally, your answer doesn't explain the change at all - it's just three lines of code. Code-only answers are rarely as helpful as they could be.)Which version of Joda-Time have you used?
I've tried with most recent - joda-time:joda-time:2.9.4 and below code works without any patterns:
import java.time.LocalDateTime;
public class Main {
static final String DATE_TIME = "2011-11-01T12:34:56.789";
public static void main(String[] args) {
LocalDateTime dateTime = LocalDateTime.parse(DATE_TIME);
System.out.println(dateTime.toString());
}
}
Sample breakpoint:
After Jon's comment I've tested above issue without joda-time (in pure Java 8) and also works perfectly.
Code:
import java.time.LocalDateTime;
public class Main {
static final String DATE_TIME = "2011-11-01T12:34:56.789";
public static void main(String[] args) {
LocalDateTime dateTime = LocalDateTime.parse(DATE_TIME);
System.out.println(dateTime.toString());
}
}
Sample breakpoint:
java.time API.
Date?Tis already quoted - check the pattern.