How can I upload current UTC time to Parse date column? - java

I'm trying to upload the current UTC time to a date "field" in Parse. How can I do this?
DateFormat df = DateFormat.getTimeInstance();
df.setTimeZone(TimeZone.getTimeZone("utc"));
String utcTime = df.format(new Date());
message.put("lastReplyUpdatedAt", utcTime);
message.saveInBackground();
Unfortunately, I can't seem to get the right imports to work for the classes above so I can't construct my String. What can I do here? Also I'm not sure if Parse would even accept that String. Are there any special formats I need to consider?


Pass a Date
From the Parse platform documentation, pass a Date object rather than a String.
Date myDate = new Date();
message.put("lastReplyUpdatedAt", myDate);
message.saveInBackground();

Related

Convert timestamp to Epoch in java

I am receiving a timestamp like : 07/23/2019.08.45 from a system.
I need to convert this to Epoch.
I was not able to parse this format by using SimpleDateFormat.
I tried:
SimpleDateFormat SDF = new SimpleDateFormat("MM/dd/yyyy.HH:mm");
Date dateInstance =SDF.parse("07/23/2019.08.45");
but it didn't work
I also tried to split and parse the time and date but still got the unable to parse error
Can someone please help.
What would be the most efficient way to get this done.

You are not providing the correct date format:
SimpleDateFormat SDF = new SimpleDateFormat("MM/dd/yyyy.HH:mm");
Date dateInstance =SDF.parse("07/23/2019.08:45");
Notice : instead of .

How to convert date in string with or without time into DATE

I have a date in string format like "2017-11-16" or "2017-11-16 12:59:11.243". I have to convert it to Date.
Below is my code:
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.sss");
Date createdOn = formatter.parse(date);
It works fine when the date is "2017-11-16 12:59:11.243". But not able to format with "2017-11-16" date.
String date is coming from URL, so it could be either with time or without time. How can I convert it into Date in spite of the fact what type of date is coming from URL?
Actually, I have to find row from the database based on the date. In the database, the date is storing in the format like 2017-11-16 12:59:11.243. But If from URL 2017-11-16 is coming then it should find according to this date.

You can modify the pars based on the presence of time,
if(dateOrDataTime.contains(":")){
//Use parser with date-time. & fetch with equal
}else{
//Use parser for date only. & fetch using date(date_time)
}

Trying to convert yyyy-MM-ddTHH:mm:ss-07:00 to correct time in Android

Okay, so here's my issue in Android right now. On our Database there's a timestamp in this format 8/15/2013 2:00:48 PM and through a .NET WebService I get that same time like this in Android: 2013-08-15T14:00:48-07:00. Now I want to convert this format into a Date Time format that I can use for comparison (for example this webservice provides every instance where a device failed at logging in so we want to check the amount of time between occurances to see if there's any issues). Below I have this code where I'm trying to use JODA Time but it's still not returning the correct format:
public static Date convertStringToDate(String input) {
String pattern = "yyyy-MM-dd'T'HH:mm:ssZ";
DateTimeFormatter formatter = DateTimeFormat.forPattern(pattern);
DateTime dateTime = formatter.parseDateTime(input);
return dateTime.toDate();
//printout shows: Thu Aug 15 17:00:48 EDT 2013
}
I know that the server is returning some crappy time format that is hard to work with (it took a while to get this to work in the iOS App we have, and even there it's still rather clunky) so I don't mind changing the webservice or the query if that would make things easier.

I have a very similar format, and I parse it using SimpleDateFormat, try this:
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZZZ", Locale.US);
Date dateTime = format .parse(value);

What i understand is that you have your correct instance of date already and what you need is to parse it to String.
I suggest you use:
DateFormat formatter = new SimpleDateFormat("d/MM/yyyy hh:mm:ss a");
//this will give you the format '8/15/2013 2:00:48 PM'
String d = formatter.format(date);
Hope this helps.
EDIT:
Also seams you want to have your date instance in -07:00 timezone
So you can change your line
DateTime dateTime = formatter.parseDateTime(input);
for
DateTime dateTime = formatter.withZone(DateTimeZone.forID("-07:00")).parseDateTime(input);

JodaTime: How hours are represented

I am working with JodaTime now and have a question about how to parse String into DateTime.
I have got a date String in the format:
"2013-05-14T11:36:08+0000"
I tried to convert it into JodaTime's DateTime object:
DateTimeFormatter fmt = DateTimeFormat.forPattern("yyyy-MM-dd'T'HH:mm:ss");
DateTime dateTime = fmt.parseDateTime("2013-05-14T11:36:08+0000");
It works fine except that if I call
dateTime.getHourOfDay()
It returns me 12 instead of 11.
Surprisingly, if I use the Java's SimpleDateFormat:
DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
Date date = df.parse("2013-05-14T11:36:08+0000");
The date contains exactly the same result, the hour is 12 instead of 11.
I am based in London. I started to think whether this is because the summer saving time? Or did I make an mistake on how the String should be parsed?
Please help. Many thanks.

String to Date in a PreparedStatement

I am trying to use setDate() in a PreparedStatement, however the date that I have is in the format of 2008-07-31. The code is:
pstmt.setDate(f++, (Date) DateFormat.getDateInstance(DateFormat.DEFAULT).parse(value.substring(0, 10)));
However, it gives me the error:
Exception in thread "main" java.text.ParseException: Unparseable date: "2008-07-31"
Why is this?

If you have a very specific date, don't ask Java to use a default date format - set it yourself.
For example:
DateFormat parser = new SimpleDateFormat("yyyy-MM-dd");
Date date = parser.parse(value.substring(0, 10));
You should also potentially set the time zone of the parser... my guess is that UTC is the most appropriate time zone here.
Note that this has nothing to do with prepared statements as such - it's just date parsing.
(As an alternative to using DateFormat and SimpleDateFormat, you could use Joda Time which has a nicer API and thread-safe formatters/parsers. You can ask Joda Time to convert from its own types to Date values. Possibly overkill if you only need it for parsing here, but if you're doing anything else with dates, it's well worth looking into.)

You need make sure the default DateFormat is in yyyy-MM-dd format (usually it's a config in OS), or you can use SimpleDateFormat or java.sql.Date to parse date string.
java.util.Date d;
SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-MM-dd");
d = sdf.parse ("2008-07-31");
// or
d = java.sql.Date.valueOf ("2008-07-31");
or, you could just set parameter as String, if the underlying database driver support the VARCHAR/CHAR to DATE conversion.

DateFormat.DEFAULT points to MEDIUM format and MEDIUM format looks like Jan 12, 1952. So, you may have create a SimpleDateFormat object with the format you are using.

I think there is mismatch in the format of the date that you are providing as input and the format in which you have specified while formatting which is default in your case.
SimpleDateFormat parser = new SimpleDateFormay("yyyy-MM-dd");
Try using the same format for both the dates.

First convert String to Date and then set that to PreparedStatement. Check with below code.
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-mm-dd");
Date convertedDate = dateFormat.parse(dateString);

I'd use
pstmt.setDate(f++,
new java.sql.Date(
new SimpleDateFormat("yyyy-MM-dd")
.parse(value.substring(0, 10))
.getTime()
)
);

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