CODEWITHSUNDEEP
javadatejaxb
rakesh
rakesh

Reputation: 15

date convert while xml value read

I have xml in which two field are Date like below

<CreateDate1>2019-03-07T09:42:20.65737Z</CreateDate1>
<CreateDate2>2019-03-07T00:00:00</CreateDate2>

when I am specifying type String in Pojo for these two, I am able to get the same values as in xml in String format.

But My requirement is to get these two field in Date format.

So I tried specifying Date type in Pojo for these two but i am getting some different format result for these two.

output :

CreateDate1= Thu Mar 07 15:12:20 IST 2019, CreateDate2= Thu Mar 07 00:00:00 IST 2019

expected output in Date format: CreateDate1= 2019-03-07T09:42:20.65737Z, CreateDate2= 2019-03-07T00:00:00

private Date CreateDate1;
private Date CreateDate2;
private Department department;
 
public Date getCreateDate1() {
    return CreateDate1;
}
 
public Date getCreateDate2() {
    return CreateDate2;
}

@Override
public String toString() {
    return "Sample [CreateDate1= " + CreateDate1 + ", CreateDate2= " + CreateDate2 + "]";
}

Can someone please hepp me on this .. Thanks in advance

Upvotes: 1

Views: 186

Answers (2)

Arvind Kumar Avinash
Arvind Kumar Avinash

Reputation: 79095

Use ZonedDateTime for createDate1 (because you need time-zone information in it) and LocalDateTime for createDate2 (because you do not need time-zone or offset information in it).

Given below is how you should parse the date-time string and how you should create a String to be returned from the toString() method:

import java.time.LocalDateTime;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;

public class Main {
    public static void main(String[] args) {
        // Parse the date-time string from your XML as follows. You can do it in
        // the constructor(s) or setters

        // --------------------------------For createDate1-----------------------------
        String dateTimeStr1 = "2019-03-07T09:42:20.65737Z";
        ZonedDateTime createDate1 = ZonedDateTime.parse(dateTimeStr1);
        System.out.println(createDate1);

        // --------------------------------For createDate2-----------------------------
        // Define format for parsing
        DateTimeFormatter parseFormat = DateTimeFormatter.ofPattern("uuuu-M-d'T'H.m.s");            
        String dateTimeStr2 = "2019-03-07T00.00.00";
        LocalDateTime createDate2 = LocalDateTime.parse(dateTimeStr2, parseFormat);

        // -----Create a string to be returned from the `toString()` method as follows------
        // Define format for printing
        DateTimeFormatter printFormat = DateTimeFormatter.ofPattern("uuuu-MM-dd'T'HH.mm.ss");
        String toString = "Sample [CreateDate1= " + createDate1.toString() + ", CreateDate2= "
                + createDate2.format(printFormat) + "]";

        System.out.println(toString);
    }
}

Output:

2019-03-07T09:42:20.657370Z
Sample [CreateDate1= 2019-03-07T09:42:20.657370Z, CreateDate2= 2019-03-07T00.00.00]

Upvotes: 0

Andreas
Andreas

Reputation: 159114

The <CreateDate1> value 2019-03-07T09:42:20.65737Z has a time zone offset (the Z at the end), specifying a +00:00 offset, i.e. the UTC offset. As such, it parses to Date exactly and displays by default in the JVM's default time zone, which is IST in your example, and explains the +05:00 offset in the displayed time-of-day.

The <CreateDate2> value 2019-03-07T00:00:00 does not have a time zone offset, so it is parsed in the JVM's default time zone, and displays in the default time zone, which explains why the time-of-day is same as input. The actual Date value varies, depending on the JVM's default time zone.

If you running with Java 8 or later, you should not use Date for this, since the result varies.

Instead, use Instant (or OffsetDateTime or ZonedDateTime) for CreateDate1. Instant requires the input to use Z as time zone offset. The other two can handle other offsets.

Use LocalDateTime for CreateDate2, since that correctly represents a date/time value without a time zone.

If you make these changes, the output will be:

Sample [CreateDate1= 2019-03-07T09:42:20.657370Z, CreateDate2= 2019-03-07T00:00]

Upvotes: 1

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