本文介绍了更改字符串日期格式的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我目前的日期格式为:
08/11/2008 00:00

my current date format is :08/11/2008 00:00

我需要将此输出转换为
2008/11 / 08 00:00
然而,使用SimpleDateFormat进行研究后它无法这样做并给我一个完全不同的输出,这里是我的代码如下:

I need to convert this output to2008/11/08 00:00However, using the SimpleDateFormat as researched it is unable to do so and give me a totally different output, here are my codes as Follows :

SimpleDateFormat simpleDateFormat2 = new SimpleDateFormat("yyyy/MM/dd HH:mm")
Date starting= simpleDateFormat2.parse(startTime);
System.out.println("" + simpleDateFormat2.format(starting) + " real date " + startTime);

我知道我正在解析正确的字符串,因为发生了以下输出:

i do know that i am parsing in the right string given that the following output occurs :

0014/05/01 00:00 real date 08/11/2008 00:00

我不太确定机械师如何检测到0014/05/01 00:00而不是

i am not too sure about how as to the mechanics detected 0014/05/01 00:00 instead of

2008/11/08 00:00

2008/11/08 00:00

我期待所有的建议
提前付款

i look forward to all sugguestionsThanks in advance

推荐答案

您需要做的第一件事是将原始值解析为 Date 对象

The first thing you need to do is parse the original value to a Date object

String startTime = "08/11/2008 00:00";
// This could be MM/dd/yyyy, you original value is ambiguous
SimpleDateFormat input = new SimpleDateFormat("dd/MM/yyyy HH:mm");
Date dateValue = input.parse(startTime);

完成后,您可以格式化 dateValue 你想要的任何方式......

Once you have that done, you can format the dateValue any way you want...

SimpleDateFormat output = new SimpleDateFormat("yyyy/MM/dd HH:mm");
System.out.println("" + output.format(dateValue) + " real date " + startTime);

输出:

2008/11/08 00:00 real date 08/11/2008 00:00

您获得 0014/05/01 00:00 的原因是 SimpleDateFormat (使用<$时) c $ c> yyyy / MM / dd HH:mm )年内使用 08 11 和当天的 2008 ,它正在内部滚动值以将值更正为有效日期

The reason you're getting 0014/05/01 00:00 is SimpleDateFormat (when using yyyy/MM/dd HH:mm) is using 08 for the year, 11 for the month and 2008 for the day, it's doing an internal rolling of the values to correct the values to a valid date

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07-05 05:16