Learn about Kotlinx DateTime's technical principles in the Java class library

Learn about Kotlinx DateTime's technical principles in the Java class library Kotlinx DateTime is an open source date and time operating library. It is a combination of expansion functions and classes based on the Kotlin language.Although it is designed for Kotlin developers, it can also be used in the Java class library due to Kotlin's interoperability. The design purpose of Kotlinx DateTime is to provide a simple, flexible and type of safety date and time operation method.It provides many powerful functions and classes, for processing date, time, time interval, time zone, and so on.In this class library, the date and time are unchanged objects, which helps to avoid inconsistency caused by modifying the same instance. Kotlinx Datetime adds many convenient methods to the date and time of Java by extending functions.This means that we can directly call the method in Kotlinx Datetime when using the Java date and time to achieve a more concise and more readable code. Below is an example of using Kotlinx Datetime: import java.time.LocalDate; import java.time.LocalDateTime; import kotlinx.datetime.Instant; import kotlinx.datetime.TimeZone; public class DateTimeExample { public static void main(String[] args) { LocalDate date = LocalDate.now(); LocalDateTime dateTime = LocalDateTime.now(); Instant instant = Instant.now(); System.out.println("Current Date: " + date); System.out.println("Current DateTime: " + dateTime); System.out.println("Current Instant: " + instant); TimeZone timeZone = TimeZone.UTC; System.out.println("Current Timezone: " + timeZone); TimeZone convertedTimeZone = timeZone.toZoneId().convertToTimeZone("America/New_York"); System.out.println("Converted Timezone: " + convertedTimeZone); } } In this example, we use the Instant, Timezone classes and related extensions provided by Kotlinx Datetime.We created instances of the current date, time, and time zone and printed the corresponding value. Kotlinx DateTime uses the extended function and class characteristics of the Kotlin language to achieve a better date and time operation function by adding a new method to the Java class library.The API provided by it is simple and easy to use, and it also has good readability and type security. Therefore, in Kotlin and Java development, both can be the first choice for processing date and time.