如何在Java中将数字格式化为固定长度，带空格，千位分隔符，2个小数 [英] How to format a number to Fixed length, space padded, thousand separator, 2 decimals in Java

问题描述

在Java中，如何将数字格式化为固定长度的空格，并在左字符串上填充空格，该空格为千位分隔符，在Java中小数点后两位. (比方说14个字符串)

How to format a number into a fixed-length, space padded on left string with space as thousand seperator with 2 decimal places in Java? (let's say 14 characters string)

即

Number = 10.03 must be:     "         10.03" 
and  
Number = 1235353.93 must be "  1 235 353.93".

推荐答案

DecimalFormatSymbols symbols = new DecimalFormatSymbols();
symbols.setGroupingSeparator(' ');
DecimalFormat format = new DecimalFormat("#,###.00", symbols);

System.out.format("%14s\n", format.format(1235353.93));
System.out.format("%14s\n", format.format(10.03));

以上内容在我的机器上显示如下:

The above prints below on my machine:

  1 235 353.93
         10.03

如果要将结果存储到变量中，也可以使用String.format:

You can also use String.format if you want to store the result into a variable:

String formatted = String.format("%14s", format.format(1235353.93));

System.out.println("Formatted Number is " + formatted);

但是，如果您不担心使用(空格)作为分组分隔符，则可以简单地做到这一点:

However, if you weren't bothered about using (space) as the grouping separator, you could've simply done this:

String.format("%,14.2f", 234343.34);

哪个会打印:

    234,343.34

这篇关于如何在Java中将数字格式化为固定长度，带空格，千位分隔符，2个小数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！