如何从日期时间字符串中分割日期和时间? [英] How to split date and time from a datetime string?

问题描述

我有一个像 8/29/2011 11:16:12 AM.我想将该字符串拆分为单独的变量，例如

I have a string like 8/29/2011 11:16:12 AM. I want to split that string into separate variables like

date = 8/29/2011
time = 11:16:12 AM

这可能吗?如果是这样，我该怎么办?

Is this possible? If so, how would I do it?

推荐答案

(请参见 Ole VV的回答下面提供了针对第一个版本的更现代的(Java 8)方法)

( See Answer by Ole V.V. below for a more modern (Java 8) approach for the first version)

一种方法是将其解析为日期对象，然后重新格式化:

One way to do is parse it to a date object and reformat it again:

    try {
        DateFormat f = new SimpleDateFormat("MM/dd/yyyy hh:mm:ss a");
        Date d = f.parse("8/29/2011 11:16:12 AM");
        DateFormat date = new SimpleDateFormat("MM/dd/yyyy");
        DateFormat time = new SimpleDateFormat("hh:mm:ss a");
        System.out.println("Date: " + date.format(d));
        System.out.println("Time: " + time.format(d));
    } catch (ParseException e) {
        e.printStackTrace();
    }

如果您只想将其切成日期时间片段，只需使用split即可获取片段

If you just want to slice it into date-time pieces, just use split to get pieces

    String date = "8/29/2011 11:16:12 AM";
    String[] parts = date.split(" ");
    System.out.println("Date: " + parts[0]);
    System.out.println("Time: " + parts[1] + " " + parts[2]);

或

    String date = "8/29/2011 11:16:12 AM";
    System.out.println("Date: " + date.substring(0, date.indexOf(' ')));
    System.out.println("Time: " + date.substring(date.indexOf(' ') + 1));

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