Long to date kotlin java. Date and milliseconds.
- Long to date kotlin java It uses this constructor to instantiate a Date that refers to zero milliseconds after (i. 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. There can be the following possible situations: just read stored timestamp and convert it to long. Here is the snippet code: (Java code) CountryCode. Instant class is a directly replacement for java. LocalTime import java. Follow edited Mar 29, 2018 at 9:20. Date, . u. DAYS. So you first need to multiply it by 1000 to get the timestamp in milliseconds. Instant class to parse text in standard ISO 8601 format, representing a moment in UTC. util date/time API to the modern date/time API. elapsedRealtime()) String time = Long. Possible Duplicate: converting long string to date I need to convert long date value to mm/dd/yyyy format. * is not meant for a front layer which clients interact with like Servlets / JSP. toJavaInstant (): Instant . 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. Date; public class MyDate extends Date { } and. Use LocalDateTime, ZoneId, ZonedDateTime and DateTimeFormatter, all from java. Modified 6 years, 1 month ago. On the JVM, non-nullable values of this type are represented as values of the primitive type long. For example, for the date "1979/12/31 23:30:00" is converted to 315552600000 milliseconds by https: Fortunately they are all long outdated. Java Specification Request (JSR) 310, where java. Oracle tutorial: Date Time explaining how to use java. of(today. Step 2 − Add the following code to res/layout/activity_main. This line does not do what you think it does: c2. import java. Returns an instant that corresponds to this civil datetime value in the specified timeZone. 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, ). Skip to main content. I suggest that it’s a near-duplicate of Fastest way to get hour of java. now() ) should have been your solution. getDay()); The deprecated methods in the Date class work like this:. Share From kotlin docs: Long Represents a 64-bit signed integer. UTC ); long secondsSinceUnixEpoch = ( dateTimeInUtc. getMonth() returns month - 1, so November is returned as 10. The Joda-Time project, now in Kotlin: Java Util Date to String for Databindings. UTC), ZoneOffset. var count = sharedPref. val formatter = I try to get hour from Date data type in Kotlin but get this error: 'getter for hours: Int' is deprecated. Converting DateTime dateTimeInUtc = new DateTime( "2011-07-19T18:23:20+0000", DateTimeZone. util; Calendar If you're on the JVM, there isn't a long long type, but you could use java. from( instant ); Joda-Time. Both: java. Locale; // import java. Period It's not recommended to use java. Date myDate = new java. 10 I hope to get Date + Time value , such as 2018. In Java, you got a method called length() that you can invoke on a file object. So how can you store nothing in it or have it empty? It can only store references to instances of java. commented, the terrible date-time classes java. What am I missing here? var timestamp = (System. ArithmeticException: long overflow in case instant is Instant. Integer. Using compareTo() function. SimpleDateFormat are now legacy, supplanted by the java. ofMillis(dur); System. util:Calendar. If you must use a java. Will also have to figure out how to use this solution with the library now. In other words you know your string will be 10 characers long so you would do: FinalDate = date. IllegalArgumentException: java. Date taking the date as a long argument interprets the argument in milliseconds, not seconds. 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. Converting long time to a java date [duplicate] Ask Question Asked 10 years, 1 month ago. The 0L means the number zero of type long. One such modern approach is using the java. SimpleDateFormat import java. That entire class is poorly designed and long The constructor of java. You can create a LocalDate based on the date picker, and then use a built in method to add one month. . Calendar, and java. Most of the java. Date API. Stay with the modern API, java. 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. I tried this one: val isoDate="20220610T230000Z" // from my barcode scanner val df=SimpleDateFormat("yyyymmdd'T'HH:mm:ss. LocalDate import java. systemDefault() may not necessarily return the timezon the OP was expecting: My timezone is Europe/Oslo. 1. MAX_VALUE); // ouch final Duration dur = Duration. badgeCount", 0) // line 12 ShortcutBadger. Use java. 3 library makes this kind of date-time work much easier. Since Kotlin runs on the Java Virtual Machine (JVM), you can use Java's robust date and time classes. 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. LocalDateTime; // import java. time framework built into Java 8 and later (); Joda-Time library use ISO 8601 formats by default for parsing and java. Follow About java. convert(milliTime, TimeUnit. So, how do I make this simple piece of code work in Kotlin? If I replace Long::class. println(dur. LocalDate value. MICROSECONDS) In generally , all of my code is written in Kotlin. Millis to Date. (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 . Calendar anymore except from situations where you have to involve considerably large amounts of legacy code. Long. Date date = java. Issue Tracker; Brand assets; Careers; Kotlin Merch; Opt-Out; Kotlin™ is protected under the Kotlin Foundation and licensed under the Apache 2 license. Date is converted to a Joda-Time DateTime object. In Java 8, the first with java. V. Use OffsetDateTime of java. Yes, you can use it on Android. Modified 1 year, this is long way i just use one line : how to sort the list<Date, String> in Java according to Date. LocalDate val today = LocalDate. And search Stack Overflow for many I suggest you switch from the outdated java. 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]. Then you'd create a SimpleDateFormat specifying the relevant pattern, culture and time zone. Is there any solution for this in Kotlin or do I have to use Java syntax in Kotlin? The Joda-Time 2. – The other feature that the code snippet demonstrates is the use of LocalDate and DateTimeFormatter from java. SSS'Z'") val date= A programmer, runner and recreational diver, lives on the island of Bali, Indonesia. The first one is just string like this: 2019-08-07 09:00:00 and like this: 1565209665. Date with its time set to 00:00:00 but the point in design perspective is that java. There’s the spread operator which is denoted by *. As such, when interfacing old and new code there will be a need for converting between the two. DateTimeFormatter fun String. currentTimeMillis() - SystemClock. No explicit setting of time zones because the local time zone is taken implicitly. Online conversion between a java. Instead you may add ThreeTenABP to your Android project in order to use java. MAX – Joy. Update for DateTimeFormatter introduced in API 26. parse(String), LocalTime. Kotlin - how to parse a string that is either in a LocalDateTime or LocalDate Kotlin: java. month, The Date class in Java internally stores Date in milliseconds. See more discussion on this topic and some more alternatives at a Java question here . Instant. You'd create a Date from the long - that's easy:. Android / Java convert String date to long type. Date object to and from this class? Skip to main content. See the new java. This library is heavily influencing the new date/time JSR-310 that will be added to Java either in Java 7 or later. time classes, the current moment is captured with a resolution of milliseconds. Viewed 5k times 0 I know there are a lot of questions about this exception but no answer suited my case. About java. Convert String Date to Date in Android (Java/Kotlin) without having to deal with Call requires API level 26. time, exclusively. time the modern Java date and time API. Note that the conversion is not always well-defined. kt import java. formatDateTime(hoursToAdd: Long): You are using the wrong methods to format your date. 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. time Package. Here's how you can get the current date and time: bit mask 0xaaaaaaaaaaaaaaaaL (16a's) is out or range in kotlin. text. You can use new Date(1413972425000L) to convert long to date. lang. Date stores a date. The Date and Calendar classes are considered long outmoded. set(date. time for this and if you just want to add a specific amount of hours, you can use LocalTime. 01. Calendar, java. Date is just java. Full-Stack Java Development with Spring Boot 3 & React; I think the question is also about formatting it consistently across all devices. val . And search Stack Overflow for many Using java. A file I am trying with got the size 161000 bytes. time package, available from Java 8 onwards, is highly recommended for its comprehensive and easy-to-use classes. I want to use the Date value of my Data class in view via Databinding. 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. Programming in Java, Spring Framework, Hibernate / JPA, MySQL. Subtracting 1 gives you October. format(formatter)) is for formatting the input which takes the current string as a format string as stated here:fun String. Date is a failed API, though. time Share. of("Europe/Oslo") instead as suggested in other answers. Modified 4 years ago. 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. That's the standard way of representing dates. ClassCastException: long[] cannot be cast to java. As Ole V. And search Stack Overflow for many I always use java. val myLocalDateTime = LocalDateTime. For older Android see How to use ThreeTenABP in Android Project. 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. 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. How can I automatically remove an entire post in my firebase database when a time About java. 21. LocalDateTime. long seconds = 1320105600; long millis = seconds * 1000; I set the maximum allowed Date to be 'Long. The standard solution to compare two Date objects is by using the compareTo() function. If you make it null means that it is not referring any instance of java. Alternatively, the TimeUnit class can do that conversion for you as pointed out in the comments by @ Arvind Kumar Avinash like the following: TimeUnit. Long and long primitive to kotlin. MAX_VALUE / 1000' which is more than enough and used cal. 10. time over the long outdated date-time classes like Date and in particular SimpleDateFormat. 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. There are probably millions of lines of code using the legacy class java. giampaolo. 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). To convert back, use the companion object function Instant. 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. util (2) The java. From docs: The provided LocalDate is interpreted as the local date in the local time zone. So, it's solution, but I would be happy to see tool without java. I want to show the megabyte representation of a long that is calculated in bytes. Improve this answer. Commented Dec 4, 2020 at 23:50. Ask Question Asked 4 years ago. getInt("flutter. . Convert Date String to Date form. Performance. 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. Get time from LocalDateTime. writeDate(date As already mentioned, you can simply cast long to double. Date subclasses java. 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. * in The Code A can convert a long value to date value, just like 2018. Use java. Viewed 44k times Part of Mobile Development Collective 10 . Follow Never use Calendar, SimpleDateFormat, TimeZone, or the other legacy date-time classes. That means you don't have to rely on those outdated datetime classes, like java. Instant) where you have immense possibilities to handle and present not only date and time but also time-zone information. Contribute to Kotlin/kotlinx-datetime development by creating an account on GitHub. time to Java 6 and 7 (ThreeTen for JSR-310). getTime() - date2. LocalDateTime: Introduced in Java 8 as part of the java. 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. LocalDate or kotlinx. Date, a DateTime truly knows its assigned time zone. Converts this kotlinx. Rather than having to redo my whole database to store Date instead of string then convert from Date to long. Date; long expiremilis = 60000l; // 1 minute // Expires in one minute from now Date expireDate = new Date(System. Note the appended L to the numeric value. junit. I don’t think it’s correct and in any case we shouldn’t use it. DateFormat df = new android. Date in Java side and java. // 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. When we call a vararg-function, we can pass arguments one-by-one, e. Conversion from type double to type long requires a nontrivial translation from a 64-bit floating-point value to the 64-bit integer representation. Date, java. 1k 7 7 The java. That format is defined by the ISO 8601 standard for date-time string formats. fromEpochMilliseconds(Long). toMillis(Long. Since there's API Desugaring, you can use java. Modified 3 years, 5 months ago. ofEpochSecond(epochValue, 0, ZoneOffset. toJavaLocalDate (): LocalDate . About; Products So better use is to convert date into Long while writing, and read Long and pass to Date constructor to get Date. getInstance(); java. Android Kotlin / JAVA - get current world time / UTC in seconds since 1970. java . Calendar, and SimpleDateFormat classes. String to kotlin. Long::class. val localDate = LocalDateTime. Let’s see now how to convert Strings into Date objects of type You can use 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. Consider throwing away the long outmoded and notoriously troublesome SimpleDateFormat and friends. 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. There was a reason why they were replaced. Lat/long to timezone mapper in Java and Swift and C#. 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. time, @b. 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. Basics of Date and Time. Instant value to a java. One of the great things of Kotlin is that you can reuse Java libraries, so java. Date class in Kotlin, but LocalDate is the more modern API, so you should use it. of(1, 2, 3) This creates a Period of 1 year, 2 months and 3 days. For earlier Android (<26) see ThreeTenABP. I can convert a java. valueOf("2"); println(num); println(num is kotlin. 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. time framework in Java 8, inspired by Joda-Time, supplanting the troublesome java. Long): Boolean { return savedAt + 20000 < System. – yole. LocalDate would be a lot easier. time, the modern Java date and time API. Calendar APIs, you need to take into account that the timestamps are interpreted in milliseconds, not seconds. DateFormat(); df. It is so much nicer to work with. 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. time classes. time. 2019 at 10:02. val date = java. getTimeInMillies(); Share. Share. parse("12-December-2012"); long mills = date. ) tl;dr Instant // Represents a moment as seen in UTC, that is, with an offset from UTC of zero hours-minutes-seconds. Unlike a j. DateTimeUnit provides a set of predefined date and time units to use in arithmetic operations on Instant and LocalDate. 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. time and kotlinx-datetime, provide a smoother way to manage date and time operations. I use. MILLISECONDS. Now, I want to that long and turn it into megabytes rather than bytes. This question has long deserved an answer like this one. val date = Date(time) val format = SimpleDateFormat("yyyy. And search Stack Overflow for many examples and explanations. getInstance() // This will set the min year as 10 years before from today. If I have Android Sutdio automatically convert from Java, it translate to -0x5555555555555556L, which is Kotlin: val diff: Long = date1. var date = LocalDate. String, the question doesn't ask for that. 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. time works nicely on older and newer Android devices. In Kotlin we may create extension for Parcel - the simplest solution. Incorporating these tools into your mobile applications will ensure precise date Kotlin, being fully interoperable with Java, can leverage the DateTimeFormatter class directly. Date also. DateTimeFormatter; String date = "Tue Apr 23 16:08:28 GMT+05:30 2013"; Your Answer needlessly involves ZonedDateTime. How can I read and write java. value // change this to anything you want - YearMonth. Follow edited Mar 31, 2016 at 6:35 . Links. 4. Try this, I use SimpleDataFormat. time classes built into Java 8 and later. Here's how you can work with some of these classes in Kotlin. Info » Tips » Java. On older devices, get ThreeTenABP and add it to your project, About java. (which are more frequent) are taken care of by your system libraries and so these are automatically kept up-to-date. 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. time package, LocalDateTime represents a date-time without a time zone in the ISO-8601 calendar system. toDays() == Assuming the long is the usual value (milliseconds since The Epoch), you create a Date instance:. This class will be consumed in a composable method. Date for this purpose. val dateAsString = incomeSnapshot. SSS") val date I'm wondering is it possible to use the type converter to simply convert the string into the long. Code can be written as below for API 26 and above // Below Imports are required for this code snippet // import java. Date class bundled with Java is notoriously troublesome, and should be avoided. LоcalDatеTimе is one of the classes in this packagе, which can store and manipulate data and time of different time zones. child("incomeDate"). We write a Java code to convert LocalDateTime to long (in Milliseconds) using Java 8 date-time API. Improve this question. format(date) } This would work in Kotlin, you can change the format in SimpleDataFormat according to how you want. 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). 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. now(). fun Parcel. MM. Date uses the default time-zone. long Java added more than a constant for such ISO 8601 compliant formats. 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. Ask Question Asked 10 years, 2 months ago. Example in Joda-Time 2. Whenever i used calendar object it returns the date with time. 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. valueOf(localDate); and that's it. How do I cast FieldValue. format. Any assistance with this would be greatly appreciated. to Java Local Date. format(date) Share. Given below is the Java code for your requirement and I hope you should be able to convert the same into Kotlin. Ask Question Asked 3 years, 5 months ago. Ram kiran Pachigolla Ram kiran Pachigolla. substring(0,9); Share. set(Calendar. Commented Mar 10, How to Convert LocalDate to Long in Kotlin / Java. Date to a java. sql. As for ZonedDateTime. java)!! val dateAsLong = dateAsString. time functionality is back-ported to Java 6 & Java 7 in the ThreeTen-Backport project. 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. Add a Yes, java. fun LocalDate. toString(time) // Error: Expecting an element I'm getting date data from weather API in two versions. In this tutorial, we’ve explored some techniques to generate the current date/time in Kotlin. 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. To add this Period to an existing date, we use the LocalDate‘s plus() method:. BigInteger for arbitrarily large numbers instead. math. Sort list with string dates. Does not require web services or data files. timе packagе was introduced in Java 8 and offers a modern date and time API. ofEpochMilli. So not java. fun dateTime(time: Int, zone: String, format: String = "EEE, MMMM d K:mm a"): String { // parse the time zone val zoneId = . I warmly recommend java. xml. java with java. DateTimeParseException: Text '18/07/2019 04:30:00' could not be parsed: Unable to obtain LocalDateTime from TemporalAccessor. getMillis() / 1000 ); // Convert milliseconds to seconds. It just requires at least Java 6. The If your long is actually the time in microseconds, you might want to divide it by 1000 before using it in Instant. android. – Basil Bourque. To learn more, see the Oracle Tutorial. It’s good know how to do using java. Long cannot be cast to java. UtcOffset represents the amount of time the local datetime at a particular time zone differs from the datetime at UTC. Commented May 7, 2023 at 5:46. Date, Calendar, & SimpleDateFormat. plusDays(5) to java. time framework is built into Java 8 and later. Date and java. This powerful class allows you to customize the format and parsing of dates and times in a flexible and efficient way. See How to use ThreeTenABP. To get the current date using the java. plusDays(5) I want to convert LocalDateTime. HOME; Android; java. 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 ). toInstant() - its javadoc clearly explains the implementation: This returns an Finally, let’s look into working with Periods in Kotlin. One of the most useful classes in this API is LocalDateTime, for holding a timezone-independent date-with-time value. The java. Date and milliseconds. It provides methods and properties to work with 64-bit signed integer values. serverTimestamp() to Kotlin/Java Date Class. currentTimeMillis() // Returns a `long` value, a count of milliseconds since the epoch reference of 1970-01-01T00:00Z. parse( "2010-10-02T12:23:23Z" ) ISO 8601. datetime. ZoneId import java. bp with subpackages. ThreeTen Backport project, the backport of java. getYear() returns year - 1900, so that for example 1986 is returned as 86, and 2013 is returned as 113. This is bundled on newer Android devices. try this: java. setTimeInMillis(cal. DAY_OF_MONTH, 0) val c2 = Calendar. Integer 5 Why is a cast from Double to <T : Number> possible, but not from Double to Int? to Java Instant. 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. I recommend Joda Time as a replacement. 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. of(2022, 1, 3, 16, 36) //LocalDateTime of(int year, int month, int dayOfMonth, int hour, int minute) val offsetDate = OffsetDateTime. val num = java. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. lastModified()); and now you have a Date object at hand. ENGLISH) calendar. 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. They were poorly designed. time package. You can use it on Android formatter. Fortunately, since Kotlin has excellent compatibility with Java, we can use the SimpleDateFormat class. Specification is JSR 310. GregorianCalendar gc = new GregorianCalendar(year,month,date); long timeStamp = gc. I want to have a field in a data class that is type of java. Do you absolutely have to use java. time library can be used like this:. year, datePicker. 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. 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. Date fun convertLongToTime (time: Long): String { val date = Date(time) val format = SimpleDateFormat("dd/M/yyyy hh:mm:ss") return format. Modified 10 years, 1 month ago. The Joda-Time project, now in maintenance mode, advises migration to the java. exactly) "the epoch", January 1, 1970, 00:00:00 GMT. e. time defined in JSR 310. getInstance() calendar. date? You may search for more similar questions. Test import java. If you're using Java 8, you might check out the new java. 2k 15 15 gold badges 59 59 In the latter case make sure you import the date and time classes from org. jupiter. See Tutorial by Oracle. threeten. jvm. Your code will be much clearer if you're Sort list with string date [Kotlin] Ask Question Asked 5 years, 10 months ago. util. In case you're restricted to legacy java. Periods represent a distance on the timeline. time package, introduced in Java 8. of(<year in int In this quick article, we will discuss how to convert the LocalDateTime class into long in Java. – Sometimes, we need to work with the old API java. This is just simple page that I wrote after having written the 3 line program once too often. The Joda-Time project, now in @JinKwon I was merely refering to the fact that ZoneId. LocalDateTime and i want to convert it in java. The accepted solution from two years ago is a cleaner way to do this. It will return the files size in bytes stored in a long. plusHours(Long) and DateTimeFormatter. from(Instant. getMonth() - 1), date. The java. getTime() val seconds = diff / 1000 val minutes = seconds / 60 val hours = minutes / 60 val days = hours / 24 The Duration class is part of java. About; Kotlin Android / Java String DateTime Format, API21. ZoneOffset; // import java. Date. What I'm missing? android; date; datetime; kotlin; Convert string to date in kotlin. Your java. Much of the java. 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. How can I parse a Unix timestamp to a date string in Kotlin? For example 1532358895 to 2018-07-23T15:14:55Z. time with API versions below 26. To make it work, you should only use an annotation, as explained in my FileFormat. 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. of(<int>) val currentYear = Year. val calendar = Calendar. time package from Java 8 instead. 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. LocalDate value to a java. of(localDate, ZoneOffset. Date(1532358895 * 1000) sdf. MilapTank. How do I change it to just the name of the day or day Convert long To Calendar - Android java. 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. 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. Follow edited Dec 31, 2013 at 16:30. Modified 8 years, 8 months ago. LocalDate; import java. ClassCastException: java. of(2018, 6, 25) var (Using Java syntax, as I’ve not yet learned Kotlin. from( Instant. I recommend you don’t use Date. Java/Kotlin String Date to milliseconds conversion. See also Oracle Tutorial. time was first described. Date class is poorly designed and long outdated, I recommend against using it. We can create a Period using Period‘s class factory method:. Date so the result is a java. For example: epoch timestamp (seconds since 1970-01-01) 1510500494 ==> DateTime object 2017-11-12 18:28:14. answered You can use java. This blog post will guide you through the process of converting a Timestamp to a long value in Java. lang package usage. Further adapted for earlier Android in the ThreeTenABP project. Understanding Timestamp and Long Kotlin: java. Your fun can be rewritten like this:. In Java 9+, the current moment is captured with a resolution of microseconds (generally, depending on the limits of your computer hardware). now() data class DatePicker(val day: Int, val month: Int) val datePicker = DatePicker(15, 2) val baseMonth = LocalDate. Timestamp or whatever applicable from java. 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. The method format which you are using (dateStr. 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. Instead use java. Follow answered Sep 18, 2012 at 8:59. How Can i do it? But I am unable to come up with an equivalent Java/Kotlin code. currentTimeMillis() } Share. public class CountryCode { private long code; public long getCode(){ return code; } } (Kotlin code) CountryUseCase. ofPattern("HH:mm"). Using java. 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. getInstance(Locale. 3. Milliseconds: To get the current Date in Kotlin do this: val dateNow = Calendar. my long value is strDate1="1346524199000" please help me FYI, the terribly troublesome old date-time classes such as java. – Arvind Kumar Avinash I need only date from Calendar Instance not the time. Here's a small example: import java. getValue(String::class. There is a problem that long value in Java can not parsed to String( or Long) in Kotlin. var period = Period. It returns a value val c1 = Calendar. So they should use ZoneId. We also saw how to parse Strings with the java. 2. I need the correct format and current date for an api request. 0. It's because I'm in the UK (British Summer Time) and java. Long automatically in this case. Or for that matter, just new Date() which has the same effect, capturing the java. /** * Method used to gain the current date. If I use the toString() method on the Date field it works. dd However the solutions offered by Kotlin, including java. The standard date parse is a little finicky: dates should look like 12/28/24, 9:12 AM. Here is some example code. 500+ Java MCQ Java Generics Tutorial Java IO Tutorial JDBC Tutorial JavaFX Tutorial Swing Tutorial Java 8 Date Time Interview Guides. Your value is in seconds, so you need to KotlinX multiplatform date/time library. getTimeInMillis() + (sec*1000)); Android / Java convert String date to long type. Instant value. 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. Date; setDateFormat() doesn't work :(java; gson; Share. Ask Question Asked 7 years ago. Kotlin - how to parse a string that is either in a LocalDateTime or LocalDate format into LocalDate. 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. Date?I would thoroughly recommend that you use Joda Time or the java. of(LocalDateTime. util implementation, we simply need to instantiate a new object of the Date class. You can use SimpleDateFormat to print that date in a cuter way. – Convert String Date to Date in Android (Java/Kotlin) without having to deal with Call requires API level 26. now()) or even new Date()? If you don’t need a Date for a legacy API, avoid that class, it is outdated. The SimpleDateFormat class helps in the formatting and parsing of data. from( Instant ). import org. from(instant) will give java. 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. 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. I have a java. These classes supplant the troublesome old legacy date-time classes such as java. If you are talking about not converting e. timeInMillis java. Instant (Java 8 and later) this way: Date. Java got an entire new framework for date-time work that includes built-in default support for such formats. 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. 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). 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. util package contains the Date class, which was used widely before the introduction of the java. Date(theFile. – 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 in kotlin. That's why it is wiser to use the modern date-time API (e. ofEpochMilli( System. g. 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. Date, both representing a moment in UTC though Instant uses a finer resolution of nanoseconds instead of milliseconds. SimpleDateFormat. Commented Apr 21, 2020 at 9:37. getYear(), (date. In Java 8 and later and on newer Android devices (from API level 26) the modern API comes built-in. Parameters: date - the milliseconds since January 1, 1970, 00:00:00 GMT. getInstance(). 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. – Anonymous. In Java there is even no need to initialize the timeStamp field. fun Instant. 9. 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. Stack Overflow. But be careful with long to double conversion because long to double is a narrowing conversion in java. 5. getTime(); Share. There is no need to do any cast. api. the trick is to use kotlin-reflection JavaToKotlinClassMap – AouledIssa. Android examples for java. time, the modern Java date and time API also known as JSR-310, is so much nicer to work with. Long); makes this output: 2 true I guess, Kotlin makes conversion from java. UTC) About java. err. Date object, you can convert by calling the new conversion methods added to the old classes such as the static method java. On my Mac I ran 100 000 Date objects through the above method in 37 milliseconds. Follow answered Oct 22, 2014 at 10:20. Additionally, we can apply a format in the same way we used before with DateTimeFormatter:. The spread operator is placed in front of the array argument: antMatchers(*angularRoutings) For further information, see the documentation:. applyCount Error: kotlin reflection java long[] field err:java. tl;dr. sjclipr mdkgdcsg hjyagxn wasqk aeir lfdarid kdzath lbza asulc rxjedtm