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This article mainly introduces the Java date format conversion example analysis, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let Xiaobian take you to understand.

Date format conversion is a common problem in the development process.

For example, dates in the following format: 13.06.2017, 2017-06-13, June 13, 2017.

Dates in a fixed format can be formatted into the desired format by string interception, but it is not generic enough.

The extension method converts the date from the original format to the desired format:

Public static class CovertDateFormatExtensionMethod {/ date string conversion / date string / / original date format / converted date format / public static string Convert (this string date,string fromDateFormat, string toDateFormat) {DateTime dateTime = DateTime.ParseExact (date, fromDateFormat, System.Globalization.DateTimeFormatInfo.CurrentInfo); return dateTime.ToString (toDateFormat);}}

The test code is as follows:

Class Program {static void Main (string [] args) {/ / dd.MM.yyyystring date1 = "13.06.2017"; / / yyyy/MM/ddstring date2 = "2017-06-13"; / / yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy Console.WriteLine (string.Format ("original date: {0}, converted date: {1}", date1, date1.Convert ("dd.MM.yyyy", "yyyy-MM-dd") Console.WriteLine (string.Format ("original date: {0}, converted date: {1}", date2, date2.Convert ("yyyy/MM/dd", "yyyy-MM-dd") Console.WriteLine (string.Format ("original date: {0}, converted date: {1}", date3, date3.Convert ("yyy year MM month dd date", "yyyy-MM-dd") Console.WriteLine (string.Format ("original date: {0}, converted date: {1}", date4, date4.Convert ("yyy year M month dd date", "yyyy-MM-dd")); Console.ReadKey ();}}

Test results:

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