将DataTime转换为本地日期格式 [英] Convert DataTime to Local Date Format

问题描述

如何将DateTime转换为本地日期格式?

How to convert DateTime to Local Date Format?

示例:日期:2014年1月25日12:00:00 AM此日期是美国格式，但在我的机器上，我使用TR格式25/1/2014，并且还假定另一台计算机使用另一种格式.示例:2014/1/25

Example: date: 1/25/2014 12:00:00 AM This date is US format but in my machine I use TR format 25/1/2014 and also assume that another machine use another format Example: 2014/1/25

如何以编程方式将此日期转换为本地日期格式?

How can I convert this date to local date format programmaticaly?

我正在使用Java版本1.7，并且我想使用java.util.Calendar

I am using java version 1.7 and i want to use java.util.Calendar

谢谢.

推荐答案

DateTimeFormatter.ofLocalizedDateTime

Use it to obtain a locale-specific date format for the ISO chronology.

演示:

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.time.format.FormatStyle;
import java.util.Locale;

public class Main {
    public static void main(String[] args) {
        DateTimeFormatter dtfLocalized = DateTimeFormatter.ofLocalizedDateTime(FormatStyle.SHORT, FormatStyle.SHORT);
        // Test
        LocalDateTime date = LocalDateTime.now();

        System.out.println(dtfLocalized.withLocale(Locale.US).format(date));
        System.out.println(dtfLocalized.withLocale(Locale.UK).format(date));
        System.out.println(dtfLocalized.withLocale(Locale.CHINESE).format(date));
        System.out.println(dtfLocalized.withLocale(Locale.GERMAN).format(date));
        System.out.println(dtfLocalized.withLocale(Locale.forLanguageTag("tr")).format(date));
        System.out.println(dtfLocalized.withLocale(Locale.getDefault()).format(date));
    }
}

输出:

5/8/21, 6:54 PM
08/05/2021, 18:54
2021/5/8 下午6:54
08.05.21, 18:54
8.05.2021 18:54
08/05/2021, 18:54

注意:如果只想格式化日期部分，请将 DateTimeFormatter.ofLocalizedDateTime(FormatStyle.SHORT，FormatStyle.SHORT)替换为 DateTimeFormatter.ofLocalizedDate(FormatStyle.SHORT).

Note: If you want to format just the date part, replace DateTimeFormatter.ofLocalizedDateTime(FormatStyle.SHORT, FormatStyle.SHORT) with DateTimeFormatter.ofLocalizedDate(FormatStyle.SHORT).

详细了解现代日期时间 Trail中的API ^* :日期时间 .

Learn more about the the modern date-time API^* from Trail: Date Time.

^{*出于任何原因，如果您必须坚持使用Java 6或Java 7，则可以使用 ThreeTen-Backport ，它将大多数 java.time 功能反向移植到Java 6&7.如果您正在为Android项目工作，并且您的Android API级别仍不符合Java-8，请检查可以通过desugaring 和如何在Android Project中使用ThreeTenABP .}

^{* For any reason, if you have to stick to Java 6 or Java 7, you can use ThreeTen-Backport which backports most of the java.time functionality to Java 6 & 7. If you are working for an Android project and your Android API level is still not compliant with Java-8, check Java 8+ APIs available through desugaring and How to use ThreeTenABP in Android Project.}

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