日期格式化后以小写形式显示AM和PM [英] Displaying AM and PM in lower case after date formatting

问题描述

格式化日期时间后，时间以大写形式显示AM或PM，但我希望以小写形式显示，例如am或pm.

After formatting a datetime, the time displays AM or PM in upper case, but I want it in lower case like am or pm.

这是我的代码:

public class Timeis {
    public static void main(String s[]) {
        long ts = 1022895271767L;
        String st = null;  
        st = new SimpleDateFormat(" MMM d 'at' hh:mm a").format(ts);
        System.out.println("time is " + ts);  
    }
}

推荐答案

不幸的是，标准格式设置方法不允许您这样做.乔达也没有.我认为您将必须通过简单的后格式替换来处理格式日期.

Unfortunately the standard formatting methods don't let you do that. Nor does Joda. I think you're going to have to process your formatted date by a simple post-format replace.

String str = oldstr.replace("AM", "am").replace("PM","pm");

您可以使用使用regepxs的replaceAll()方法，但是我认为以上内容就足够了.我不做一个全面的toLowerCase()，因为如果将来更改格式字符串以包含(例如)月份名称或类似名称，这可能会破坏格式.

You could use the replaceAll() method that uses regepxs, but I think the above is perhaps sufficient. I'm not doing a blanket toLowerCase() since that could screw up formatting if you change the format string in the future to contain (say) month names or similar.

James Jithin的解决方案看起来要好得多，并且执行此操作的正确方法(如评论中所述) )

James Jithin's solution looks a lot better, and the proper way to do this (as noted in the comments)

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