String timer = "01:30 PM"
String = "12/10/2020"
DateTime fdate = DateFormat("yyyy-MM-dd").parse(dates);
DateTime ftime = DateFormat("hh:mm:ss").parse(timer);
I am getting the error while converting the string time into the Original time format. How to convert that time and date into the different format.
How to get the combination of date and time like 2020-10-12 13:30:00
Change ftime to :
DateTime ftime = DateFormat("HH:mm:ss").parse(timer);
Consider reading DateFormat Documentation for more information
I have a timestamp like "1461819600". The I execute this code in a distributed environment as val campaign_startdate_year: String = Utils.getYear(campaign_startdate_timestamp).toString
The problem is that I always get the same year 1970. Which might be the reason of it?
import com.github.nscala_time.time.Imports._
def getYear(timestamp: Any): Int = {
var dt = 2017
if (!timestamp.toString.isEmpty)
{
dt = new DateTime(timestamp.toString.toLong).getYear // toLong should be multiplied by 1000 to get millisecond value
}
dt
}
The same issue occurs when I want to get a day of a month. I get 17 instead of 28.
def getDay(timestamp: Any): Int = {
var dt = 1
if (!timestamp.toString.isEmpty)
{
dt = new DateTime(timestamp.toString.toLong).getDayOfYear
}
dt
}
The timestamp you have is a number of seconds since 01-01-1970, 00:00:00 UTC.
Java (and Scala) usually use timestamps that are a number of milliseconds since 01-01-1970, 00:00:00 UTC.
In other words, you need to multiply the number with 1000.
The timestamp that you have seems to be in seconds since the epoch (i.e. a Unix timestamp). Java time utilities expect the timestamp to be in milliseconds.
Just multiply that value by 1000 and you should get the expected results.
You can rely on either on spark sql function which have some date utilities (get year/month/day, add day/month) or you can use JodaTime library to have more control over Date and DateTime, like in my answer here: How to replace in values in spark dataframes after recalculations?
I have a mach absolute timestamp from a sql database, I want to read in my app. I want to display this timestamp, so I want to convert it to NSDate. How is this possible? I have a timestamp like this: 443959550 (result in this case is UTC: 26.01.2015 10:05:50)
443959550 seems to be a time interval since the reference date
1 January 2001, GMT:
let date = NSDate(timeIntervalSinceReferenceDate: 443959550)
println(date) // 2015-01-26 10:05:50 +0000
Take a look at timeIntervalSince1970. There you can set a timestamp as init-parameter.
var timeStamp = 443959550
//NSDate
var date = NSDate(timeIntervalSince1970:443959550)
I wonder if there is other way how to create new Date in Groovy at specific date and time than parse it from String with Date.parse method. Can I get complete list of Date creation in Groovy?
You can use the existing Java methods to create a date:
// takes the date encoded as milliseconds since midnight, January 1, 1970 UTC
def mydate = new Date(System.currentTimeMillis())
// create from an existing Calendar object
def mydate = new GregorianCalendar(2014, Calendar.APRIL, 3, 1, 23, 45).time
Groovy also provides some streamlined extensions for creating Dates. Date.parse() and Date.parseToStringDate() parse it from a String. The Date.copyWith() method builds a date from a map. You can use them like this:
// uses the format strings from Java's SimpleDateFormat
def mydate = Date.parse("yyyy-MM-dd hh:mm:ss", "2014-04-03 1:23:45")
// uses a format equivalent to EEE MMM dd HH:mm:ss zzz yyyy
def mydate = Date.parseToStringDate("Thu Apr 03 01:23:45 UTC 2014")
def mydate = new Date().copyWith(
year: 2014,
month: Calendar.APRIL,
dayOfMonth: 3,
hourOfDay: 1,
minute: 23,
second: 45)
The other answers are outdated as of Java 8 and later. The old legacy date-time classes such as java.util.Date/.Calendar/.GregorianCalendar have proven to be poorly designed, confusing, and troublesome.
java.time
The java.time framework supplants those old classes.
Groovy can use these classes of course. I do not know the Groovy syntax, but it should be easy to adapt this simple Java example.
LocalDate/LocalTime
The LocalDate and LocalTime classes have no concept of time zone. So they do not represent actual moments on the timeline.
LocalDate localDate = LocalDate( 2016 , Month.JANUARY , 2 ); // year, month, date.
LocalTime localTime = LocalTime( 12 , 30 , 0 , 0 ); // hour, minute, second, nanosecond.
ZonedDateTime
Apply a time zone (ZoneId) to get a ZonedDateTime. Use a proper time zone name, never the 3-4 zone abbreviations commonly seen.
ZoneId zoneId = ZoneId.of( "America/Montreal" );
ZonedDateTime zdt = ZonedDateTime.of( localDate , localTime , zoneId );
Instant
You should avoid the old date-time classes. But if required, you can convert. An Instant is the java.time class to represent a moment on the timeline in UTC with a resolution of nanoseconds. Look for new methods on the old java.util.Date class for converting to/from an Instant. We can extract the needed Instant object from our ZonedDateTime.
Nanosecond vs Millisecond
Note that converting from java.time involves data loss! The java.time classes support nanosecond resolution (up to 9 digits of decimal place on fractional second) while the old java.util.Date supports only milliseconds (up to 3 decimal places). Any 4th to 9th digit of fractional second is truncated. For example, 2016-04-28T02:05:05.123456789 is truncated to 2016-04-28T02:05:05.123.
Instant instant = zdt.toInstant();
java.util.Date utilDate = java.util.Date.from( instant );
Going the other direction, from java.util.Date to Instant. The 4th to 9th decimal place of fractional second will be zeros, the 1st-3rd for any milliseconds.
Instant instant = utilDate.toInstant();
Groovy is good.
new Date(2016-1900, 7, 16, 20, 32, 25)
Tue Aug 16 20:32:25 PDT 2016
Note that the year must be massaged, but you can create a new Java Date representing any second you want.
You can see more Groovy Goodness at http://mrhaki.blogspot.com/2009/08/groovy-goodness-working-with-dates.html
As far as I know there's no other way. You can also pass exact time in millis to constructor of Date class but first You need to get the time in millis.
Maybe this link will be helpful.
Or this code snippet:
def calendar = new GregorianCalendar(2011,1,7,15,7,23)
def date = calendar.getTime()
println date
You can get current date using Date() and format it the way you want using:
/*
y: year
m: month
d: day
h: hour
m: minute
*/
Date().format('yyyy-MM-dd hh-mm')
Date().format('yy/mm/dd hh')
The return type is a string.
LocalDateTime.now().format('yyyy-MM-dd hh-mm')
pardon me if it seems to be a duplicate question.
I have seen many posts already on this topic. However after trying many examples could not find the solution to my problem.
I tried this code
SimpleDateFormat sdf = new SimpleDateFormat("EEE MMM dd yyyy", Locale.ENGLISH )
Date newDate = sdf.parse(sdf.format( new Date( dateTimeString ) ) )
However the second line of code always converts the date to the server specific date and timezone which i don't want. I also tried the following
SimpleDateFormat sdf = new SimpleDateFormat("EEE MMM dd yyyy HH:mm:ss zzz", Locale.ENGLISH )
log.info "+++++++++++++++++hidden date ++++++++ " + params.hiddenGameDateTime.substring(35, 38)
log.info "x = " + sdf.format( new Date ( params.hiddenGameDateTime ))
String tzone = params.hiddenGameDateTime.substring(35, 38)
sdf.setTimeZone( TimeZone.getTimeZone( tzone ) )
log.info "Timezone = " + sdf.getTimeZone().getDisplayName()
Please note that
sdf.format( new Date( dateTimeString ) )
gives me the desired result, however it gives me the string value of the date and the actual value to be stored in database is of the Data type date which can't hold the string value.
the value for date and time in my case gets converted to PST date and time. how can i avoid this. The user input date with timezone should be stored in the database as it is with no change in date and timezone.
An observation: The constructor new Date( dateTimeString ) is deprecated. A better replacement would be something like that:
SimpleDateFormat sdfOriginal = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy");
Date d = sdfOriginal.parse(dateTimeString);
Furthermore: An expression like sdf.parse(sdf.format(...)) using the same format object does not make much sense.
But most important, your statement "the second line of code always converts the date to the server specific date and timezone" seems to be based on test output like:
System.out.println(newDate);
This implicitly uses toString() which is based on jvm default time zone, in your case the server time zone. But keep in mind, the internal state of j.u.Date does not reference any time zone. A Date is just a container for a long, namely the seconds since 1970-01-01T00:00:00Z in UTC time zone, that is a global time.
Additional remark:
If you need the client time zone (in a scenario with multiple users in different time zones) to create user-specific formatted date strings, then you indeed need to store the time zone preference of every user in the database, so you can use this information for output in an expression like:
SimpleDateFormat sdf = new SimpleDateFormat("{pattern}";
sdf.setTimeZone(TimeZone.getTimeZone("{user-preference-time-zone}");
String userOutput = sdf.format(date);
Date is always jvm timezone specific. You need to normalize it to standard time and store it in DB to cater with different timezone servers.