Long to date kotlin java The accepted solution from two years ago is a cleaner way to do this. java . Long and long primitive to kotlin. It just requires at least Java 6. DateTimeFormatter class ApplicationTests { @Test fun changeDateFormat(){ val inputDateString = "11/31/2019" val inputFormatter = In Java, dealing with dates and times is a common task in many applications. commented, the terrible date-time classes java. time to Java 6 and 7 (ThreeTen for JSR-310). Further adapted for earlier Android in the ThreeTenABP project. So not java. set(Calendar. Stack Overflow. Oracle tutorial: Date Time explaining how to use java. DAY_OF_MONTH, 0) val c2 = Calendar. time and kotlinx-datetime, provide a smoother way to manage date and time operations. LocalTime import java. Java got an entire new framework for date-time work that includes built-in default support for such formats. of(today. time with API versions below 26. LоcalDatеTimе is one of the classes in this packagе, which can store and manipulate data and time of different time zones. The Date and Calendar classes are considered long outmoded. Given below is the Java code for your requirement and I hope you should be able to convert the same into Kotlin. value // change this to anything you want - YearMonth. There are probably millions of lines of code using the legacy class java. That format is defined by the ISO 8601 standard for date-time string formats. (1) If from the link from the question you click on Date at the top and next on Date API, it says JavaScript Date objects represent a single moment in time . err. 5. getTimeInMillies(); Share. Your code will be much clearer if you're Sort list with string date [Kotlin] Ask Question Asked 5 years, 10 months ago. util. /** * Method used to gain the current date. of(2022, 1, 3, 16, 36) //LocalDateTime of(int year, int month, int dayOfMonth, int hour, int minute) val offsetDate = OffsetDateTime. MAX_VALUE); // ouch final Duration dur = Duration. How do I change it to just the name of the day or day Convert long To Calendar - Android java. val date = java. java)!! val dateAsLong = dateAsString. now() ) should have been your solution. DateTimeFormatter fun String. now(). Date with its time set to 00:00:00 but the point in design perspective is that java. 9. ThreeTen Backport project, the backport of java. DateTimeFormatter; String date = "Tue Apr 23 16:08:28 GMT+05:30 2013"; Your Answer needlessly involves ZonedDateTime. Try this, I use SimpleDataFormat. Add a Yes, java. Date?I would thoroughly recommend that you use Joda Time or the java. From docs: The provided LocalDate is interpreted as the local date in the local time zone. I warmly recommend java. Commented May 7, 2023 at 5:46. HOME; Android; java. Lat/long to timezone mapper in Java and Swift and C#. Date stores a date. Date is converted to a Joda-Time DateTime object. dd However the solutions offered by Kotlin, including java. util (2) The java. ofMillis(dur); System. This library is heavily influencing the new date/time JSR-310 that will be added to Java either in Java 7 or later. We write a Java code to convert LocalDateTime to long (in Milliseconds) using Java 8 date-time API. Date also. var period = Period. date? You may search for more similar questions. See the new java. from(Instant. Consider throwing away the long outmoded and notoriously troublesome SimpleDateFormat and friends. toLong() looks like your value is in milliseconds already (as Android operates with such precision) and convert to Date, then format it Java 8 has a completely new API for date and time. One such modern approach is using the java. Date; setDateFormat() doesn't work :(java; gson; Share. Will also have to figure out how to use this solution with the library now. Subtracting 1 gives you October. This powerful class allows you to customize the format and parsing of dates and times in a flexible and efficient way. Java Specification Request (JSR) 310, where java. They were poorly designed. There can be the following possible situations: just read stored timestamp and convert it to long. of(2018, 6, 25) var (Using Java syntax, as I’ve not yet learned Kotlin. As such, when interfacing old and new code there will be a need for converting between the two. Kotlin - how to parse a string that is either in a LocalDateTime or LocalDate format into LocalDate. getInstance(Locale. Follow edited Mar 31, 2016 at 6:35 . Date in Java side and java. You can create a LocalDate based on the date picker, and then use a built in method to add one month. Modified 1 year, this is long way i just use one line : how to sort the list<Date, String> in Java according to Date. I can convert a java. The "lat/long to timezone polygon mapping" is hardcoded, and we hope this rarely changes, but the changes to offsets and daylight savings changeover dates etc. SimpleDateFormat are now legacy, supplanted by the java. getMonth() returns month - 1, so November is returned as 10. MM. Date, . * in The Code A can convert a long value to date value, just like 2018. How can I parse a Unix timestamp to a date string in Kotlin? For example 1532358895 to 2018-07-23T15:14:55Z. try this: java. I need the correct format and current date for an api request. Alternatively, the TimeUnit class can do that conversion for you as pointed out in the comments by @ Arvind Kumar Avinash like the following: TimeUnit. – yole. math. time package, available from Java 8 onwards, is highly recommended for its comprehensive and easy-to-use classes. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. time library can be used like this:. Your fun can be rewritten like this:. It provides methods and properties to work with 64-bit signed integer values. I don’t think it’s correct and in any case we shouldn’t use it. Kotlin does not have its own time package because it runs on the JVM, which means it can directly use Java's date and time APIs. Ask Question Asked 7 years ago. 1k 7 7 The java. parse("12-December-2012"); long mills = date. time classes, the current moment is captured with a resolution of milliseconds. I have a java. convert(milliTime, TimeUnit. Step 2 − Add the following code to res/layout/activity_main. How can I read and write java. getTimeInMillis() + (sec*1000)); Android / Java convert String date to long type. Info » Tips » Java. of(1, 2, 3) This creates a Period of 1 year, 2 months and 3 days. of(<int>) val currentYear = Year. Kotlin’s standard library provides the Kotlin does not have its own time package because it runs on the JVM, which means it can directly use Java's date and time APIs. time works nicely on older and newer Android devices. java. answered You can use java. currentTimeMillis() - SystemClock. Skip to main content. Any assistance with this would be greatly appreciated. Instant value. year, datePicker. format(formatter)) is for formatting the input which takes the current string as a format string as stated here:fun String. See also Oracle Tutorial. It returns a value val c1 = Calendar. lang package usage. And search Stack Overflow for many Using java. Fortunately, since Kotlin has excellent compatibility with Java, we can use the SimpleDateFormat class. Date taking the date as a long argument interprets the argument in milliseconds, not seconds. It is so much nicer to work with. See more discussion on this topic and some more alternatives at a Java question here . time, the modern Java date and time API also known as JSR-310, is so much nicer to work with. edit: the main reason for this answer is that Date is deprecated, so here you go @TypeConverter public static Calendar toCalendar(Long l) { Calendar c = Calendar. Milliseconds: To get the current Date in Kotlin do this: val dateNow = Calendar. of(<year in int In this quick article, we will discuss how to convert the LocalDateTime class into long in Java. set(date. So how can you store nothing in it or have it empty? It can only store references to instances of java. Convert String Date to Date in Android (Java/Kotlin) without having to deal with Call requires API level 26. This question has long deserved an answer like this one. In case you're restricted to legacy java. On my Mac I ran 100 000 Date objects through the above method in 37 milliseconds. You can use new Date(1413972425000L) to convert long to date. now() data class DatePicker(val day: Int, val month: Int) val datePicker = DatePicker(15, 2) val baseMonth = LocalDate. Calendar APIs, you need to take into account that the timestamps are interpreted in milliseconds, not seconds. That means you don't have to rely on those outdated datetime classes, like java. – Basil Bourque. Programming in Java, Spring Framework, Hibernate / JPA, MySQL. We saw the implementations using LocalDate, LocalDateTime, and Calendar, and In this blog post, we will explore the LocalDate, LocalDateTime, and ZoneId classes in Java and demonstrate how they can be used with Kotlin code examples. Much of the java. Specification is JSR 310. Millis to Date. 21. This is bundled on newer Android devices. val num = java. from( Instant ). This line does not do what you think it does: c2. Date; public class CreatedAtDate extends Date { } Your POJO will be like this: import MyDate; import CreatedAtDate; public class Foo { MyDate date; CreatedAtDate created_at; } Finally set your custom deserializer: fun convertEpochToOffsetDateTime(epochValue: Long): OffsetDateTime { return OffsetDateTime. Use LocalDateTime, ZoneId, ZonedDateTime and DateTimeFormatter, all from java. 1. time package, which provides a new As an aside consider throwing away the long outmoded and notoriously troublesome SimpleDateFormat and friends, and adding ThreeTenABP to your Android project in order to use java. Most of the java. But be careful with long to double conversion because long to double is a narrowing conversion in java. I want to have a field in a data class that is type of java. I'm having trouble as currentTimeMillis is good for the calculation but I can't see a built in function to convert to nice time or time/date. java with java. I had this same problem (how to store time to Room), but I was using Calendar, so I made this: [note: This anwer is for Calendar; the main reason is that Calendar is now supported]. The java. Instant class to parse text in standard ISO 8601 format, representing a moment in UTC. The SimpleDateFormat class helps in the formatting and parsing of data. 3 library makes this kind of date-time work much easier. java, the code does not compile: Error:(27, 104) Kotlin: None of the following functions can be called with the arguments supplied: public open fun `as`(p0: Path<Long!>!): I am not sure this will map java classes to kotlin classes. val dateAsString = incomeSnapshot. 2k 15 15 gold badges 59 59 In the latter case make sure you import the date and time classes from org. That entire class is poorly designed and long The constructor of java. See Tutorial by Oracle. One of the most useful classes in this API is LocalDateTime, for holding a timezone-independent date-with-time value. Your value is in seconds, so you need to KotlinX multiplatform date/time library. Convert Date String to Date form. toDays() == Assuming the long is the usual value (milliseconds since The Epoch), you create a Date instance:. Using compareTo() function. Date and milliseconds. Long public class LongArrayDemo { private long[] array = new long[2]; public Now you are at it, if you go down this avenue, you may also want to consider whether you want Date objects in you app at all, or you prefer classes from JSR-310. The Joda-Time project, now in maintenance mode, advises migration to the java. Date in kotlin. LocalDateTime: Introduced in Java 8 as part of the java. Hot Network Questions Convincing the contrapositive is equivalent Cards for communicating dietary restrictions in Japan Movie where a woman in an apartment experiments on corpses with a syringe, learns to possess people, and then takes over the protagonist's girlfriend Instance of java. ENGLISH) calendar. Ask Question Asked 4 years ago. SimpleDateFormat. UTC) } Btw, I'm using Jooq for SQL queries using Long: In Java, a long value representing time usually stands for the number of milliseconds since the Unix epoch (January 1, 1970, 00:00:00 GMT). asList(1, 2, 3), or, if we already have an array and want to pass its contents to the function, we My code below returns the date 14 days later and incorrect time. If I use the toString() method on the Date field it works. of(localDate, ZoneOffset. time classes. getMonth() - 1), date. In particular, while Date and Calendar always represent a particular instant in time, with no such concept as "just a date", Joda Time does have a type representing this (LocalDate). val . Date object, you can convert by calling the new conversion methods added to the old classes such as the static method java. DateFormat df = new android. formatDateTime(hoursToAdd: Long): You are using the wrong methods to format your date. And search Stack Overflow for many I suggest you switch from the outdated java. ArithmeticException: long overflow in case instant is Instant. To add this Period to an existing date, we use the LocalDate‘s plus() method:. The standard date parse is a little finicky: dates should look like 12/28/24, 9:12 AM. getInstance() calendar. from(instant) will give java. Date class in Kotlin, but LocalDate is the more modern API, so you should use it. SSS") val date I'm wondering is it possible to use the type converter to simply convert the string into the long. GregorianCalendar gc = new GregorianCalendar(year,month,date); long timeStamp = gc. There is no need to do any cast. Date is a failed API, though. Java/Kotlin String Date to milliseconds conversion. Viewed 44k times Part of Mobile Development Collective 10 . I recommend Joda Time as a replacement. The first one is just string like this: 2019-08-07 09:00:00 and like this: 1565209665. – Convert String Date to Date in Android (Java/Kotlin) without having to deal with Call requires API level 26. Or for that matter, just new Date() which has the same effect, capturing the java. 4. ofEpochMilli. This class will be consumed in a composable method. val formatter = I try to get hour from Date data type in Kotlin but get this error: 'getter for hours: Int' is deprecated. getInt("flutter. UTC ); long secondsSinceUnixEpoch = ( dateTimeInUtc. getValue(String::class. Update for DateTimeFormatter introduced in API 26. And search Stack Overflow for many examples and explanations. For example: SimpleDateFormat format = new If you do need a Date, for example for a legacy API that you don’t want to change just now, why not just Date. To make it work, you should only use an annotation, as explained in my FileFormat. Date is just java. I suggest that it’s a near-duplicate of Fastest way to get hour of java. Let’s see now how to convert Strings into Date objects of type You can use the java. Instant class is a directly replacement for java. Full-Stack Java Development with Spring Boot 3 & React; I think the question is also about formatting it consistently across all devices. parse( "2010-10-02T12:23:23Z" ) ISO 8601. long seconds = 1320105600; long millis = seconds * 1000; I set the maximum allowed Date to be 'Long. MILLISECONDS. getInstance() // This will set the min year as 10 years before from today. format(vararg args: Any?): String Uses this string as a format string and returns a string obtained by substituting the specified arguments, using the Caveat emptor with extremely large values though, Long. 6,934 5 5 gold GSON to JSON conversion - long format and simple date format "yyyy-MM You can also create a date with the current local date plus the number of miliseconds you need to add as Expire time. Commented Dec 4, 2020 at 23:50. We also saw how to parse Strings with the java. We can change the date from The Java date and calendar APIs are unfortunately not the most well-designed classes of the standard Java API. In Java, you got a method called length() that you can invoke on a file object. – Anonymous. toString(time) // Error: Expecting an element I'm getting date data from weather API in two versions. Date to a java. Links. getTime() - date2. time package, LocalDateTime represents a date-time without a time zone in the ISO-8601 calendar system. This blog post will guide you through the process of converting a Timestamp to a long value in Java. util:Calendar. In Java 9+, the current moment is captured with a resolution of microseconds (generally, depending on the limits of your computer hardware). LocalDate; import java. Date, java. kt import java. Date uses the default time-zone. About; Products So better use is to convert date into Long while writing, and read Long and pass to Date constructor to get Date. Period It's not recommended to use java. Convert String Date to Date in Android (Java/Kotlin) without having to But beware of limitations in the implementations of Java based on the OpenJDK codebase. Date(1532358895 * 1000) sdf. DateFormat(); df. ofEpochSecond(epochValue, 0, ZoneOffset. 10 I hope to get Date + Time value , such as 2018. bp with subpackages. I recommend you don’t use Date. threeten. These classes supplant the troublesome old legacy date-time classes such as java. Parameters: date - the milliseconds since January 1, 1970, 00:00:00 GMT. LocalDate val today = LocalDate. For earlier Android (<26) see ThreeTenABP. currentTimeMillis() // Returns a `long` value, a count of milliseconds since the epoch reference of 1970-01-01T00:00Z. xml. . LocalDate value to a java. Date, Calendar, & SimpleDateFormat. getTime(); Share. Contribute to Kotlin/kotlinx-datetime development by creating an account on GitHub. jupiter. Convert Long to LocalDateTime in Java How to convert milliseconds to date format in Android using Kotlin - This example demonstrates how to convert milliseconds to date format in Android using Kotlin. from( Instant. There’s the spread operator which is denoted by *. Long cannot be cast to java. valueOf("2"); println(num); println(num is kotlin. String to kotlin. Modified 10 years, 1 month ago. For older Android see How to use ThreeTenABP in Android Project. UtcOffset represents the amount of time the local datetime at a particular time zone differs from the datetime at UTC. LocalDate value. format("yyyy Kotlinで文字列を数値に変更する方法です。また日付文字列をDateに変換、Dateを文字列に変換します。文字列から数値へ変換する（StringからIntへの変換）Kotlinの標準ライブラリ The Long class in Kotlin is a wrapper for the primitive long type. time over the long outdated date-time classes like Date and in particular SimpleDateFormat. Follow answered Oct 22, 2014 at 10:20. When we call a vararg-function, we can pass arguments one-by-one, e. Ask Question Asked 10 years, 2 months ago. BigInteger for arbitrarily large numbers instead. time package, available from Learn to convert a long value to a date in Java using the Java 8 Date-Time API, the legacy Date API, and the Joda-Time library. timе packagе was introduced in Java 8 and offers a modern date and time API. Instead you may add ThreeTenABP to your Android project in order to use java. format(date) Share. MICROSECONDS) In generally , all of my code is written in Kotlin. time the modern Java date and time API. time framework is built into Java 8 and later. fun dateTime(time: Int, zone: String, format: String = "EEE, MMMM d K:mm a"): String { // parse the time zone val zoneId = . Converts this kotlinx. toJavaLocalDate (): LocalDate . Share From kotlin docs: Long Represents a 64-bit signed integer. Date and java. Then you'd create a SimpleDateFormat specifying the relevant pattern, culture and time zone. Instant) where you have immense possibilities to handle and present not only date and time but also time-zone information. Date API. If you're using Java 8, you might check out the new java. import org. So any date is the number of milliseconds passed since January 1, 1970, 00:00:00 GMT and the Date class provides a constructor which can be used to create a Date from milliseconds. time was first described. time Package. Modified 4 years ago. You can use it on Android formatter. Basics of Date and Time. Follow answered Sep 18, 2012 at 8:59. time defined in JSR 310. Does not require web services or data files. util package contains the Date class, which was used widely before the introduction of the java. You can use SimpleDateFormat to print that date in a cuter way. Note that the modern Date-Time API is based on ISO 8601 and does not require using a DateTimeFormatter object explicitly as long as the Date-Time string conforms Converting Long to Date in JAVA with java tutorial, features, history, variables, programs, operators, oops concept, array, string, map, math, methods, examples etc. In Java 6 and 7 get the ThreeTen Backport, the backport of the new classes (ThreeTen for JSR 310; see the links at the bottom). It's because I'm in the UK (British Summer Time) and java. api. Follow edited Mar 29, 2018 at 9:20. What I'm missing? android; date; datetime; kotlin; Convert string to date in kotlin. var count = sharedPref. Use java. getYear() returns year - 1900, so that for example 1986 is returned as 86, and 2013 is returned as 113. Sort list with string dates. ClassCastException: java. Since Kotlin runs on the Java Virtual Machine (JVM), you can use Java's robust date and time classes. time framework built into Java 8 and later (); Joda-Time library use ISO 8601 formats by default for parsing and java. plusDays(5) I want to convert LocalDateTime. time classes built into Java 8 and later. month, The Date class in Java internally stores Date in milliseconds. A file I am trying with got the size 161000 bytes. Calendar, and java. Improve this question. Long); makes this output: 2 true I guess, Kotlin makes conversion from java. Is there any solution for this in Kotlin or do I have to use Java syntax in Kotlin? The Joda-Time 2. time package. time package from Java 8 instead. Example in Joda-Time 2. One of the great things of Kotlin is that you can reuse Java libraries, so java. time for this and if you just want to add a specific amount of hours, you can use LocalTime. On the JVM, non-nullable values of this type are represented as values of the primitive type long. In this tutorial, we’ve explored some techniques to generate the current date/time in Kotlin. ofEpochMilli( System. notice that I put the time in setTimeInMillis as long and not as int, notice my date format has MM and not mm (mm is for minutes, and not months, this is why you have a value of "41" where the months should be) for Kotlin users: fun getDate(timestamp: Long) :String { val calendar = Calendar. applyCount Error: kotlin reflection java long[] field err:java. time, the modern Java date and time API. Date(theFile. For example, for the date "1979/12/31 23:30:00" is converted to 315552600000 milliseconds by https: Fortunately they are all long outdated. g. format. e. Test import java. getDay()); The deprecated methods in the Date class work like this:. android. The java. For projects supporting Java 6 or 7, this functionality is available via the ThreeTenBP, This article explores different ways to compare two dates in Kotlin. lang. Now, I want to that long and turn it into megabytes rather than bytes. Commented Mar 10, How to Convert LocalDate to Long in Kotlin / Java. Timestamp or whatever applicable from java. time, the I have Set of Long values Set<Long> ids = {1,2,3,4} What I'd like to achieve is Set<Map<Long, Set<Long>> and from this Set of ids I need to have Set with 4 elements like: Set In 2018 the best way doesn’t involve Calendar, SimpleDateFormat, Date or any of the other long outdated Java date and time classes. The Joda-Time project, now in I am getting date value from database like "2013-02-27 06:06:30" using StringTokenizer I will get time separately like below String startTime = "2013-02-27 06:06:30"; StringTokenizer token = new That class is notoriously troublesome and long outdated. println(dur. It may not be the same on an The simplest thing is probably to multiply by the number of milliseconds in a day (86400000 = 24 * 60 * 60 * 1000) and use new Date(milliseconds): long days = 17749; Date d = new Date(days * 86400000L); The old java. LocalDate would be a lot easier. MilapTank. Instant. Locale; // import java. getInstance(). You'd create a Date from the long - that's easy:. of("Europe/Oslo") instead as suggested in other answers. plusDays(5) to java. 3. Unlike a j. Date for this purpose. The standard solution to compare two Date objects is by using the compareTo() function. As always, the complete code for this article is available In this article, we’ll explore how to work with date and time in Kotlin, from basic operations to more advanced techniques. fun LocalDate. getInstance() // This will set the max date of the calendar, as the last day of the previous month rather than the current date (default) c. Long::class. time, exclusively. UTC), ZoneOffset. Use OffsetDateTime of java. If I have Android Sutdio automatically convert from Java, it translate to -0x5555555555555556L, which is Kotlin: val diff: Long = date1. Long automatically in this case. I tried this one: val isoDate="20220610T230000Z" // from my barcode scanner val df=SimpleDateFormat("yyyymmdd'T'HH:mm:ss. Stay with the modern API, java. Date so the result is a java. SSS'Z'") val date= A programmer, runner and recreational diver, lives on the island of Bali, Indonesia. toJavaInstant (): Instant . MAX_VALUE / 1000' which is more than enough and used cal. In other words you know your string will be 10 characers long so you would do: FinalDate = date. 01. timeInMillis java. Long): Boolean { return savedAt + 20000 < System. Ram kiran Pachigolla Ram kiran Pachigolla. There was a reason why they were replaced. I use. time. Here is some example code. Using java. time Share. UTC) About java. 0. It uses this constructor to instantiate a Date that refers to zero milliseconds after (i. No explicit setting of time zones because the local time zone is taken implicitly. Date class bundled with Java is notoriously troublesome, and should be avoided. Modified 8 years, 8 months ago. // Mon Nov 09 11:41:29 GMT I'm working with a String of date such as: val date = "2021-01-24" how can I convert that string in order to get "Sunday" (user local english) or "Domingo" (user local Convert String Date to Date in Android (Java/Kotlin) without having to deal with Call requires API level 26. The method format which you are using (dateStr. If you make it null means that it is not referring any instance of java. I have Date object like this -> Sat Jun 26 00:00:00 IST 2021 I want to set hours, minutes, seconds like this -> Sat Jun 26 23:59:59 IST 2021 In Android Or use a LocalDateTime from Java 8 // change this to anything you want - Year. Note the appended L to the numeric value. Share. In Java 8, the first with java. serverTimestamp() to Kotlin/Java Date Class. ClassCastException: long[] cannot be cast to java. 2. fromEpochMilliseconds(Long). If you must use a java. badgeCount", 0) // line 12 ShortcutBadger. Viewed 5k times 0 I know there are a lot of questions about this exception but no answer suited my case. As Ole V. Performance. Incorporating these tools into your mobile applications will ensure precise date Kotlin, being fully interoperable with Java, can leverage the DateTimeFormatter class directly. Date theDate = new Date(theLongValue); and then use one of the DateFormats (perhaps SimpleDateFormat) or something like JodaTime to format the result however you want. val localDate = LocalDateTime. To learn more, see the Oracle Tutorial. What am I missing here? var timestamp = (System. Date class is poorly designed and long outdated, I recommend against using it. DateTimeUnit provides a set of predefined date and time units to use in arithmetic operations on Instant and LocalDate. And search Stack Overflow for many I always use java. But it causes issue in my spring boot application when send json request without postId in the body and when I need to apply jsr 303 validation to my kotlin class, like this: Never use the terrible SimpleDateFormat, Date, and Calendar classes in Java — now legacy as of java. Note that the conversion is not always well-defined. Do you absolutely have to use java. * is not meant for a front layer which clients interact with like Servlets / JSP. DateTimeParseException: Text '18/07/2019 04:30:00' could not be parsed: Unable to obtain LocalDateTime from TemporalAccessor. LocalDateTime. Periods represent a distance on the timeline. Here's a small example: import java. Depending on the Locale, the time zone of the device, a Long time is not so helpful: in particular, the user is supposed to pick a date and the API returns a time, it requires quite some processing to get the right date and format, see the answer with the offset calculation. String, the question doesn't ask for that. For example: epoch timestamp (seconds since 1970-01-01) 1510500494 ==> DateTime object 2017-11-12 18:28:14. See How to use ThreeTenABP. valueOf(localDate); and that's it. It’s good know how to do using java. Conversion from type double to type long requires a nontrivial translation from a 64-bit floating-point value to the 64-bit integer representation. This is just simple page that I wrote after having written the 3 line program once too often. 2019 at 10:02. writeDate(date As already mentioned, you can simply cast long to double. val myLocalDateTime = LocalDateTime. How Can i do it? But I am unable to come up with an equivalent Java/Kotlin code. Long. Additionally, we can apply a format in the same way we used before with DateTimeFormatter:. Here is the snippet code: (Java code) CountryCode. systemDefault() may not necessarily return the timezon the OP was expecting: My timezone is Europe/Oslo. So you first need to multiply it by 1000 to get the timestamp in milliseconds. Follow Never use Calendar, SimpleDateFormat, TimeZone, or the other legacy date-time classes. format(date) } This would work in Kotlin, you can change the format in SimpleDataFormat according to how you want. text. The spread operator is placed in front of the array argument: antMatchers(*angularRoutings) For further information, see the documentation:. The Joda-Time project, now in Kotlin: Java Util Date to String for Databindings. MAX_VALUE days cannot be correctly converted into long millis (compared to Duration's ctor that does throw when trying to init with such a value): final long millis = TimeUnit. getTime() val seconds = diff / 1000 val minutes = seconds / 60 val hours = minutes / 60 val days = hours / 24 The Duration class is part of java. import java. 10. Converting long time to a java date [duplicate] Ask Question Asked 10 years, 1 month ago. It will return the files size in bytes stored in a long. Follow How can I convert a Long value to date time and convert current time to Long kotlin? FYI, the troublesome old date-time classes such as java. Calendar, and SimpleDateFormat classes. Rather than having to redo my whole database to store Date instead of string then convert from Date to long. Possible Duplicate: converting long string to date I need to convert long date value to mm/dd/yyyy format. NumberFormatException Invalid Long with I want to use currentTimeMillis twice so I can calculate a duration but I also want to display Time and Date in user readable format. Stay in touch: Security; Blog; Issue Tracker; Brand assets; Careers; Kotlin Merch; Opt-Out; Kotlin™ is protected under the Kotlin Foundation and licensed under the Apache 2 license. Instant value to a java. Instead use java. Date object to and from this class? Skip to main content. DAYS. util date/time API to the modern date/time API. Additionally I will also need to keep a reference to the original value (these are actually timestamps and will need to be converted back to the Date ). How do I cast FieldValue. In Java 8 and later and on newer Android devices (from API level 26) the modern API comes built-in. Modified 3 years, 5 months ago. Kotlin - how to parse a string that is either in a LocalDateTime or LocalDate Kotlin: java. Date date = new Date(epochTime); Note that epochTime here ought to be in milliseconds since the epoch - if you've got seconds since the epoch, multiply by 1000. fun Parcel. Pramod When working with dates and times in Kotlin, especially in formats specific to your application's requirements, DateTimeFormatter class from the Java Time API offers a sophisticated solution. So, it's solution, but I would be happy to see tool without java. ) tl;dr Instant // Represents a moment as seen in UTC, that is, with an offset from UTC of zero hours-minutes-seconds. The 0L means the number zero of type long. In Java there is even no need to initialize the timeStamp field. long Java added more than a constant for such ISO 8601 compliant formats. lastModified()); and now you have a Date object at hand. MAX – Joy. val date = Date(time) val format = SimpleDateFormat("yyyy. from( instant ); Joda-Time. Commented Apr 21, 2020 at 9:37. LocalDate or kotlinx. Sometimes, you may need to convert a Timestamp object into a long value, which represents the number of milliseconds since January 1, 1970, 00:00:00 GMT. If you are talking about not converting e. Code can be written as below for API 26 and above // Below Imports are required for this code snippet // import java. About java. Issue Tracker; Brand assets; Careers; Kotlin Merch; Opt-Out; Kotlin™ is protected under the Kotlin Foundation and licensed under the Apache 2 license. Your java. toInstant() - its javadoc clearly explains the implementation: This returns an Finally, let’s look into working with Periods in Kotlin. Since there's API Desugaring, you can use java. . Improve this answer. Android / Java convert String date to long type. time functionality is back-ported to Java 6 & Java 7 in the ThreeTen-Backport project. To format and parse dates, you'll make use of classes like LocalDate , In this tutorial, we’ve seen how to convert String objects into Date types using the Date-Time API with Kotlin. Date, both representing a moment in UTC though Instant uses a finer resolution of nanoseconds instead of milliseconds. Integer 5 Why is a cast from Double to <T : Number> possible, but not from Double to Int? to Java Instant. Understanding Timestamp and Long Kotlin: java. The Joda-Time project, now in @JinKwon I was merely refering to the fact that ZoneId. plusHours(Long) and DateTimeFormatter. val calendar = Calendar. Integer. Both: java. – The other feature that the code snippet demonstrates is the use of LocalDate and DateTimeFormatter from java. I am using SDF to parse a string date to millis with below code private fun dateToMilliseconds(dateValue: String): Long? { val sdf = SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss. to Java Local Date. tl;dr. fun Instant. Calendar anymore except from situations where you have to involve considerably large amounts of legacy code. That's why it is wiser to use the modern date-time API (e. LocalDateTime; // import java. LocalDate import java. my long value is strDate1="1346524199000" please help me FYI, the terribly troublesome old date-time classes such as java. To convert back, use the companion object function Instant. getMillis() / 1000 ); // Convert milliseconds to seconds. getInstance(); java. To get the current date using the java. The If your long is actually the time in microseconds, you might want to divide it by 1000 before using it in Instant. util; Calendar If you're on the JVM, there isn't a long long type, but you could use java. Observe that this code has the hidden assumption that the calendar object associated with format is currently holding the date that we just formatted, and that as a side effect of formatting with a date having no hours/minutes/seconds, that internal date also has no hours/minutes/seconds. now()) or even new Date()? If you don’t need a Date for a legacy API, avoid that class, it is outdated. sql. toMillis(Long. time package, introduced in Java 8. There is a problem that long value in Java can not parsed to String( or Long) in Kotlin. You have tried date2=""; what you mean to do by this statement you want to reference the instance of String to a variable that is suppose to I'm trying to find out how I can convert timestamp to datetime in Kotlin, this is very simple in Java but I cant find any equivalent of it in Kotlin. getYear(), (date. Calendar, java. Follow About java. SimpleDateFormat import java. Date, a DateTime truly knows its assigned time zone. Date; public class MyDate extends Date { } and. elapsedRealtime()) String time = Long. I want to use the Date value of my Data class in view via Databinding. Ask Question Asked 3 years, 5 months ago. Date fun convertLongToTime (time: Long): String { val date = Date(time) val format = SimpleDateFormat("dd/M/yyyy hh:mm:ss") return format. util implementation, we simply need to instantiate a new object of the Date class. ZoneOffset; // import java. LocalDateTime and i want to convert it in java. 500+ Java MCQ Java Generics Tutorial Java IO Tutorial JDBC Tutorial JavaFX Tutorial Swing Tutorial Java 8 Date Time Interview Guides. Date; long expiremilis = 60000l; // 1 minute // Expires in one minute from now Date expireDate = new Date(System. datetime. Here's how you can get the current date and time: bit mask 0xaaaaaaaaaaaaaaaaL (16a's) is out or range in kotlin. As for ZonedDateTime. Whenever i used calendar object it returns the date with time. var date = LocalDate. In Kotlin we may create extension for Parcel - the simplest solution. Instant (Java 8 and later) this way: Date. setTimeInMillis(cal. Yes, you can use it on Android. Get time from LocalDateTime. giampaolo. IllegalArgumentException: java. I do not need Kotlin syntax but AFAIK, Java code can be executed as it is in Kotlin or at least anyone working with Kotlin should be able to translate a Java code What you get is a long number representing the number of millis elapsed from Jan 1st, 1970. Android examples for java. substring(0,9); Share. Date. the trick is to use kotlin-reflection JavaToKotlinClassMap – AouledIssa. ofPattern("HH:mm"). (which are more frequent) are taken care of by your system libraries and so these are automatically kept up-to-date. Date date = java. u. Date subclasses java. So, how do I make this simple piece of code work in Kotlin? If I replace Long::class. Online conversion between a java. jvm. child("incomeDate"). junit. exactly) "the epoch", January 1, 1970, 00:00:00 GMT. currentTimeMillis() } Share. But in metric report this class is You should use the Date class or any other class that extends Date class, for example Timestamp class. ZoneId import java. Note that a Date instance in Java, always represent milliseconds since epoch 0, in UTC/GMT, but it is printed in local time when you print it. So they should use ZoneId. – Sometimes, we need to work with the old API java. public class CountryCode { private long code; public long getCode(){ return code; } } (Kotlin code) CountryUseCase. That's the standard way of representing dates. V. – You can combine the date and time strings to create a date-time string in ISO 8601 format which you can parse into LocalDateTime and then convert into Instant by using the applicable ZoneId. Date myDate = new java. parse(String), LocalTime. of(LocalDateTime. Follow edited Dec 31, 2013 at 16:30. – Arvind Kumar Avinash I need only date from Calendar Instance not the time. Converting DateTime dateTimeInUtc = new DateTime( "2011-07-19T18:23:20+0000", DateTimeZone. time framework in Java 8, inspired by Joda-Time, supplanting the troublesome java. Modified 6 years, 1 month ago. I want to show the megabyte representation of a long that is calculated in bytes. About; Kotlin Android / Java String DateTime Format, API21. We can create a Period using Period‘s class factory method:. 10 23:11, how can I do with Kotlin? And to convert java file to kotlin file with Android Studio, choosing Code->Convert java file to kotlin file. Here's how you can work with some of these classes in Kotlin. currentTimeMillis() + You are not going to find a lot of joy with Java's date/time API because it's one of the worst in the JDK (performance, threading, illogical, ). Use java. On older devices, get ThreeTenABP and add it to your project, About java. Returns an instant that corresponds to this civil datetime value in the specified timeZone. How can I automatically remove an entire post in my firebase database when a time About java. time, @b. Hello Devs, I'm working on barcode scanner app, I get date and time at this pattern "20220610T230000Z" I think its ISO8601 date-time format However, I just want to parse this pattern so I can customize it as I want. Android Kotlin / JAVA - get current world time / UTC in seconds since 1970. ywox rwprcjdq rswfk izpz davgm suvcf vcbvjy xdpg xpk pepl