java-datetime/datetime.groovy at main · lulunac27a/java-datetime · GitHub

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import java.time.Instant

import java.time.LocalDateTime

import java.time.ZoneId

import java.time.ZoneOffset

import java.time.ZonedDateTime

import java.time.format.DateTimeFormatter

import java.util.InputMismatchException

import java.util.Scanner

class datetime {

static void main(String[] args) {

try (Scanner sc = new Scanner(System.in)) {

int year, month, day, hour, minute, second, millisecond, microsecond, nanosecond//initialize date and time variables

DateTimeFormatter era1 = DateTimeFormatter.ofPattern('GGG') // Format the date and time values with a specified pattern for all supported formats

DateTimeFormatter era2 = DateTimeFormatter.ofPattern('GGGG')

DateTimeFormatter era3 = DateTimeFormatter.ofPattern('GGGGG')

DateTimeFormatter year1 = DateTimeFormatter.ofPattern('uu')

DateTimeFormatter year2 = DateTimeFormatter.ofPattern('uuuu')

DateTimeFormatter yearEra = DateTimeFormatter.ofPattern('yy')

DateTimeFormatter yearEra2 = DateTimeFormatter.ofPattern('yyyy')

DateTimeFormatter dayOfYear = DateTimeFormatter.ofPattern('D')

DateTimeFormatter monthOfYear = DateTimeFormatter.ofPattern('M')

DateTimeFormatter monthOfYear2 = DateTimeFormatter.ofPattern('MMM')

DateTimeFormatter monthOfYear3 = DateTimeFormatter.ofPattern('MMMM')

DateTimeFormatter monthOfYear4 = DateTimeFormatter.ofPattern('MMMMM')

DateTimeFormatter dayOfMonth = DateTimeFormatter.ofPattern('d')

DateTimeFormatter quarter = DateTimeFormatter.ofPattern('q')

DateTimeFormatter quarter2 = DateTimeFormatter.ofPattern('qqq')

DateTimeFormatter quarter3 = DateTimeFormatter.ofPattern('qqqq')

DateTimeFormatter weekBasedYear = DateTimeFormatter.ofPattern('YY')

DateTimeFormatter weekBasedYear2 = DateTimeFormatter.ofPattern('YYYY')

DateTimeFormatter weekOfYear = DateTimeFormatter.ofPattern('w')

DateTimeFormatter weekOfMonth = DateTimeFormatter.ofPattern('W')

DateTimeFormatter dayOfWeek = DateTimeFormatter.ofPattern('E')

DateTimeFormatter dayOfWeek2 = DateTimeFormatter.ofPattern('EEEE')

DateTimeFormatter dayOfWeek3 = DateTimeFormatter.ofPattern('EEEEE')

DateTimeFormatter localDayOfWeek = DateTimeFormatter.ofPattern('e')

DateTimeFormatter localDayOfWeek2 = DateTimeFormatter.ofPattern('eee')

DateTimeFormatter localDayOfWeek3 = DateTimeFormatter.ofPattern('eeee')

DateTimeFormatter localDayOfWeek4 = DateTimeFormatter.ofPattern('eeeee')

DateTimeFormatter localWeekOfMonth = DateTimeFormatter.ofPattern('F')

DateTimeFormatter amPm = DateTimeFormatter.ofPattern('a')

DateTimeFormatter hour12 = DateTimeFormatter.ofPattern('h')

DateTimeFormatter hour0To11 = DateTimeFormatter.ofPattern('K')

DateTimeFormatter hour24 = DateTimeFormatter.ofPattern('k')

DateTimeFormatter hourOfDay = DateTimeFormatter.ofPattern('H')

DateTimeFormatter minute1 = DateTimeFormatter.ofPattern('m')

DateTimeFormatter second1 = DateTimeFormatter.ofPattern('s')

DateTimeFormatter fractionOfSecond = DateTimeFormatter.ofPattern('SSSSSSSSS')

DateTimeFormatter millisecondOfDay = DateTimeFormatter.ofPattern('A')

DateTimeFormatter nanosecondOfSecond = DateTimeFormatter.ofPattern('n')

DateTimeFormatter nanosecondOfDay = DateTimeFormatter.ofPattern('N')

DateTimeFormatter timezoneId = DateTimeFormatter.ofPattern('VV')

DateTimeFormatter timezoneName = DateTimeFormatter.ofPattern('z')

DateTimeFormatter timezoneName2 = DateTimeFormatter.ofPattern('zzzz')

DateTimeFormatter timezoneOffset = DateTimeFormatter.ofPattern('OOOO')

DateTimeFormatter timezoneOffsetZ = DateTimeFormatter.ofPattern('XXXXX')

DateTimeFormatter timezoneOffsetX = DateTimeFormatter.ofPattern('xxxxx')

DateTimeFormatter timezoneOffset2 = DateTimeFormatter.ofPattern('ZZZZZ')

DateTimeFormatter timezoneOffsetZ1 = DateTimeFormatter.ofPattern('ZZZZ')

try { //make sure date and time input is a valid integer

System.out.print('Year: ')

year = sc.nextInt()

System.out.print('Month: ')

month = sc.nextInt()// 1 is January

System.out.print('Day: ')

day = sc.nextInt()

System.out.print('Hour: ')

hour = sc.nextInt()

System.out.print('Minute: ')

minute = sc.nextInt()

System.out.print('Second: ')

second = sc.nextInt()

System.out.print('Millisecond: ')

millisecond = sc.nextInt()

System.out.print('Microsecond: ')

microsecond = sc.nextInt()

System.out.print('Nanosecond: ')

nanosecond = sc.nextInt()

LocalDateTime enteredDateAndTime = LocalDateTime.of(year, month, day, hour, minute, second).withNano(millisecond * 1000000 + microsecond * 1000 + nanosecond) // Convert datetime of GregorianCalendar object to LocalDateTime object named enteredDateAndTime without a time zone and set nanoseconds to 1,000,000 (1 million) * milliseconds + 1,000 (1 thousand) * microseconds + nanoseconds

ZonedDateTime enteredDateAndTimeTimezone = ZonedDateTime.of(enteredDateAndTime, ZoneId.systemDefault())// Get time zone of entered date and time values

// Print the entered date and time values in all supported formats

System.out.println('\nEntered Date and Time Values:\n')

System.out.println('Era: ' + era1.format(enteredDateAndTime) + ' (' + era2.format(enteredDateAndTime) + ')' + ' (' + era3.format(enteredDateAndTime) + ')') // Print the date and time values with formatted date and time pattern

System.out.println('Year: ' + year1.format(enteredDateAndTime) + ' (' + year2.format(enteredDateAndTime) + ')')

System.out.println('Era Year: ' + yearEra.format(enteredDateAndTime) + ' (' + yearEra2.format(enteredDateAndTime) + ')')

System.out.println('Day of Year: ' + dayOfYear.format(enteredDateAndTime))

System.out.println('Month of Year: ' + monthOfYear.format(enteredDateAndTime) + ' (' + monthOfYear2.format(enteredDateAndTime) + ')' + ' (' + monthOfYear3.format(enteredDateAndTime) + ')' + ' (' + monthOfYear4.format(enteredDateAndTime) + ')')

System.out.println('Day of the Month: ' + dayOfMonth.format(enteredDateAndTime))

System.out.println('Quarter: ' + quarter.format(enteredDateAndTime) + ' (' + quarter2.format(enteredDateAndTime) + ')' + ' (' + quarter3.format(enteredDateAndTime) + ')')

System.out.println('ISO Week-based Year: ' + weekBasedYear.format(enteredDateAndTime) + ' (' + weekBasedYear2.format(enteredDateAndTime) + ')')

System.out.println('Week of Year: ' + weekOfYear.format(enteredDateAndTime))

System.out.println('Week of Month: ' + weekOfMonth.format(enteredDateAndTime))

System.out.println('Day of the Week: ' + dayOfWeek.format(enteredDateAndTime) + ' (' + dayOfWeek2.format(enteredDateAndTime) + ')' + ' (' + dayOfWeek3.format(enteredDateAndTime) + ')')

System.out.println('Local Day of the Week: ' + localDayOfWeek.format(enteredDateAndTime) + ' (' + localDayOfWeek2.format(enteredDateAndTime) + ')' + ' (' + localDayOfWeek3.format(enteredDateAndTime) + ')' + ' (' + localDayOfWeek4.format(enteredDateAndTime) + ')')

System.out.println('Local Week of Month: ' + localWeekOfMonth.format(enteredDateAndTime))

System.out.println('AM/PM: ' + amPm.format(enteredDateAndTime))

System.out.println('12-Hour Format ' + hour12.format(enteredDateAndTime))

System.out.println('0-11-Hour Format: ' + hour0To11.format(enteredDateAndTime))

System.out.println('24-Hour Format: ' + hour24.format(enteredDateAndTime))

System.out.println('Hour of Day: ' + hourOfDay.format(enteredDateAndTime))

System.out.println('Minute: ' + minute1.format(enteredDateAndTime))

System.out.println('Second: ' + second1.format(enteredDateAndTime))

System.out.println('Fraction of Second: ' + fractionOfSecond.format(enteredDateAndTime))

System.out.println('Millisecond of Day: ' + millisecondOfDay.format(enteredDateAndTime))

System.out.println('Nanosecond: ' + nanosecondOfSecond.format(enteredDateAndTime))

System.out.println('Nanosecond of Day: ' + nanosecondOfDay.format(enteredDateAndTime))

System.out.println('Time Zone ID: ' + timezoneId.format(enteredDateAndTimeTimezone))

System.out.println('Time Zone: ' + timezoneName2.format(enteredDateAndTimeTimezone) + ' (' + timezoneName.format(enteredDateAndTimeTimezone) + ')')

System.out.println('Localized Time Zone Offset: ' + timezoneOffset.format(enteredDateAndTimeTimezone) + ' (' + timezoneOffset2.format(enteredDateAndTimeTimezone) + ')')

System.out.println('Time Zone Offset: ' + timezoneOffsetZ.format(enteredDateAndTimeTimezone) + ' (' + timezoneOffsetX.format(enteredDateAndTimeTimezone) + ')' + ' (' + timezoneOffsetZ1.format(enteredDateAndTimeTimezone) + ')')

System.out.println('\nCurrent Date and Time Values:\n')

}

catch (InputMismatchException ex) { //if entered, date and time values are in the wrong format (not a valid integer)

System.out.println('\nInvalid date and time input.\nPrinting current date and time.\n')//print the error

}

// Print the current date and time values in all supported formats

ZonedDateTime dateAndTimeNow = ZonedDateTime.now() // Get the current date and time based on local computer date and time with local time zone

System.out.println('Current Era: ' + era1.format(dateAndTimeNow) + ' (' + era2.format(dateAndTimeNow) + ')' + ' (' + era3.format(dateAndTimeNow) + ')') // Print the formatted date and time values in current local date and time

System.out.println('Current Year: ' + year1.format(dateAndTimeNow) + ' (' + year2.format(dateAndTimeNow) + ')')

System.out.println('Current Era Year: ' + yearEra.format(dateAndTimeNow) + ' (' + yearEra2.format(dateAndTimeNow) + ')')

System.out.println('Current Day of Year: ' + dayOfYear.format(dateAndTimeNow))

System.out.println('Current Month of Year: ' + monthOfYear.format(dateAndTimeNow) + ' (' + monthOfYear2.format(dateAndTimeNow) + ')' + ' (' + monthOfYear3.format(dateAndTimeNow) + ')' + ' (' + monthOfYear4.format(dateAndTimeNow) + ')')

System.out.println('Current Day of the Month: ' + dayOfMonth.format(dateAndTimeNow))

System.out.println('Current Quarter: ' + quarter.format(dateAndTimeNow) + ' (' + quarter2.format(dateAndTimeNow) + ')' + ' (' + quarter3.format(dateAndTimeNow) + ')')

System.out.println('Current ISO Week-based Year: ' + weekBasedYear.format(dateAndTimeNow) + ' (' + weekBasedYear2.format(dateAndTimeNow) + ')')

System.out.println('Current Week of Year: ' + weekOfYear.format(dateAndTimeNow))

System.out.println('Current Week of Month: ' + weekOfMonth.format(dateAndTimeNow))

System.out.println('Current Day of the Week: ' + dayOfWeek.format(dateAndTimeNow) + ' (' + dayOfWeek2.format(dateAndTimeNow) + ')' + ' (' + dayOfWeek3.format(dateAndTimeNow) + ')')

System.out.println('Current Local Day of the Week: ' + localDayOfWeek.format(dateAndTimeNow) + ' (' + localDayOfWeek2.format(dateAndTimeNow) + ')' + ' (' + localDayOfWeek3.format(dateAndTimeNow) + ')' + ' (' + localDayOfWeek4.format(dateAndTimeNow) + ')')

System.out.println('Current Local Week of Month: ' + localWeekOfMonth.format(dateAndTimeNow))

System.out.println('Current AM/PM: ' + amPm.format(dateAndTimeNow))

System.out.println('Current 12-Hour Format ' + hour12.format(dateAndTimeNow))

System.out.println('Current 0-11 Hour Format: ' + hour0To11.format(dateAndTimeNow))

System.out.println('Current 24-Hour Format: ' + hour24.format(dateAndTimeNow))

System.out.println('Current Hour of Day: ' + hourOfDay.format(dateAndTimeNow))

System.out.println('Current Minute: ' + minute1.format(dateAndTimeNow))

System.out.println('Current Second: ' + second1.format(dateAndTimeNow))

System.out.println('Current Fraction of Second: ' + fractionOfSecond.format(dateAndTimeNow))

System.out.println('Current Millisecond of Day: ' + millisecondOfDay.format(dateAndTimeNow))

System.out.println('Current Nanosecond: ' + nanosecondOfSecond.format(dateAndTimeNow))

System.out.println('Current Nanosecond of Day: ' + nanosecondOfDay.format(dateAndTimeNow))

System.out.println('Current Time Zone ID: ' + timezoneId.format(dateAndTimeNow))

System.out.println('Current Time Zone: ' + timezoneName2.format(dateAndTimeNow) + ' (' + timezoneName.format(dateAndTimeNow) + ')')

System.out.println('Current Localized Time Zone Offset: ' + timezoneOffset.format(dateAndTimeNow) + ' (' + timezoneOffset2.format(dateAndTimeNow) + ')')

System.out.println('Current Time Zone Offset: ' + timezoneOffsetZ.format(dateAndTimeNow) + ' (' + timezoneOffsetX.format(dateAndTimeNow) + ')' + ' (' + timezoneOffsetZ1.format(dateAndTimeNow) + ')')

Instant currentUtcDateAndTime = Instant.now()// Get the current UTC date and time using an Instant object

LocalDateTime utcDateAndTimeNow = LocalDateTime.ofInstant(currentUtcDateAndTime, ZoneOffset.UTC)// Convert from an Instant object to LocalDateTime object

System.out.println('Current UTC Era: ' + era1.format(utcDateAndTimeNow) + ' (' + era2.format(utcDateAndTimeNow) + ')' + ' (' + era3.format(utcDateAndTimeNow) + ')') // Print the formatted date and time values in current local date and time

System.out.println('Current UTC Year: ' + year1.format(utcDateAndTimeNow) + ' (' + year2.format(utcDateAndTimeNow) + ')')

System.out.println('Current UTC Era Year: ' + yearEra.format(utcDateAndTimeNow) + ' (' + yearEra2.format(utcDateAndTimeNow) + ')')

System.out.println('Current UTC Day of Year: ' + dayOfYear.format(utcDateAndTimeNow))

System.out.println('Current UTC Month of Year: ' + monthOfYear.format(utcDateAndTimeNow) + ' (' + monthOfYear2.format(utcDateAndTimeNow) + ')' + ' (' + monthOfYear3.format(utcDateAndTimeNow) + ')' + ' (' + monthOfYear4.format(utcDateAndTimeNow) + ')')

System.out.println('Current UTC Day of Month: ' + dayOfMonth.format(utcDateAndTimeNow))

System.out.println('Current UTC Quarter: ' + quarter.format(utcDateAndTimeNow) + ' (' + quarter2.format(utcDateAndTimeNow) + ')' + ' (' + quarter3.format(utcDateAndTimeNow) + ')')

System.out.println('Current UTC ISO Week-based Year: ' + weekBasedYear.format(utcDateAndTimeNow) + ' (' + weekBasedYear2.format(utcDateAndTimeNow) + ')')

System.out.println('Current UTC Week of Year: ' + weekOfYear.format(utcDateAndTimeNow))

System.out.println('Current UTC Week of Month: ' + weekOfMonth.format(utcDateAndTimeNow))

System.out.println('Current UTC Day of Week: ' + dayOfWeek.format(utcDateAndTimeNow) + ' (' + dayOfWeek2.format(utcDateAndTimeNow) + ')' + ' (' + dayOfWeek3.format(utcDateAndTimeNow) + ')')

System.out.println('Current UTC Local Day of the Week: ' + localDayOfWeek.format(utcDateAndTimeNow) + ' (' + localDayOfWeek2.format(utcDateAndTimeNow) + ')' + ' (' + localDayOfWeek3.format(utcDateAndTimeNow) + ')' + ' (' + localDayOfWeek4.format(utcDateAndTimeNow) + ')')

System.out.println('Current UTC Local Week of Month: ' + localWeekOfMonth.format(utcDateAndTimeNow))

System.out.println('Current UTC AM/PM: ' + amPm.format(utcDateAndTimeNow))

System.out.println('Current UTC 12-Hour Format ' + hour12.format(utcDateAndTimeNow))

System.out.println('Current UTC 0-11 Hour Format: ' + hour0To11.format(utcDateAndTimeNow))

System.out.println('Current UTC 24-Hour Format: ' + hour24.format(utcDateAndTimeNow))

System.out.println('Current UTC Hour of Day: ' + hourOfDay.format(utcDateAndTimeNow))

System.out.println('Current UTC Minute: ' + minute1.format(utcDateAndTimeNow))

System.out.println('Current UTC Second: ' + second1.format(utcDateAndTimeNow))

System.out.println('Current UTC Fraction of Second: ' + fractionOfSecond.format(utcDateAndTimeNow))

System.out.println('Current UTC Millisecond of Day: ' + millisecondOfDay.format(utcDateAndTimeNow))

System.out.println('Current UTC Nanosecond: ' + nanosecondOfSecond.format(utcDateAndTimeNow))

System.out.println('Current UTC Nanosecond of Day: ' + nanosecondOfDay.format(utcDateAndTimeNow))

}

java-datetime/datetime.groovy at main · lulunac27a/java-datetime · GitHub

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