How java uses YearMonth to group classes

This article mainly shows you "java how to use YearMonth combination class", the content is easy to understand, clear, hope to help you solve your doubts, the following let the editor lead you to study and learn "java how to use YearMonth combination class" this article.

How to express a fixed date such as the expiration of a credit card? the answer lies in YearMonth.

Similar to the example where MonthDay checks for duplicate events, YearMonth is another composite class that represents the credit card expiration date, FD expiration date, futures option expiration date, and so on. You can also use this class to get the number of days in the month, and the lengthOfMonth () method of the YearMonth instance returns the number of days in the month, which is useful when determining whether there are 28 or 29 days in February.

Package com.shxt.demo02; import java.time.*; public class Demo13 {public static void main (String [] args) {YearMonth currentYearMonth = YearMonth.now (); System.out.printf ("Days in month year% s:% d% n", currentYearMonth, currentYearMonth.lengthOfMonth ()); YearMonth creditCardExpiry = YearMonth.of (2019, Month.FEBRUARY); System.out.printf ("Your credit card expires on% s% n", creditCardExpiry) }} these are all the contents of the article "how java uses YearMonth composite classes". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!