Table of contents
  1. [Creating and Formatting Dates]
    1. [USE java LocalDate]
  2. Java8 Instant



[Creating and Formatting Dates]

[USE java LocalDate]

https://www.javatpoint.com/java-localdate

Groovy Time

http://docs.groovy-lang.org/latest/html/api/groovy/time/TimeCategory.html

use(TimeCategory) {
    endDate = duration ? (endDate + duration.minutes) : (endDate + DEFAULTDURATION.minutes)
}

https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html

def form = DateTimeFormatter.ofPattern("yyyy/MM/dd")
println LocalDate.parse("2020/12/07", form)

form = DateTimeFormatter.ISO_LOCAL_DATE
println LocalDate.now().format(form)

//java date to localdatetime    

Date theDate = Date.parse("yyyy/MM/dd hh:mm a", "2020/04/16 07:35am")

LocalDateTime newDate = theDate.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime()

println LocalDateTime.now().truncatedTo(ChronoUnit.MINUTES)
println newDate

println newDate.isBefore(LocalDateTime.now().truncatedTo(ChronoUnit.MINUTES))    

Date scheduledDate = Date.parse(userDateFormat + 'hh:mm a', "${schedulingParams?.scheduledDate} ${schedulingParams?.scheduledTime}")

Date utcDate = new Date(scheduledDate.format('yyyy/MM/dd HH:mm:ss', TimeZone.getTimeZone("UTC")))

  • HH for 24 hour

  • a is for am/pm

  • add :ss for seconds

  • use .format to change date

  • USING Calendar

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Java8 Instant

Instant nowUtc = Instant.now()
ZoneId asiaSingapore = ZoneId.of("Asia/Singapore")
ZonedDateTime nowAsiaSingapore = ZonedDateTime.ofInstant(nowUtc, asiaSingapore)