将双精度型转换为不带小数位的字符串的最佳方法 [英] Best way to convert a double to String without decimal places

问题描述

将双精度型转换为不带小数位的字符串的最佳方法是什么?

What is the best way to convert a double to String without decimal places?

String.valueOf((int)documentNumber)怎么办?

双精度数始终在小数点后为0.我不需要四舍五入

The doubles always have 0 after the decimal dot. I don't need to round or truncate

推荐答案

如果您确定double确实是整数，请使用以下整数:

If you are sure that the double is indeed an integer use this one:

NumberFormat nf = DecimalFormat.getInstance();
nf.setMaximumFractionDigits(0);
String str = nf.format(documentNumber);

作为奖励，这样一来，您可以将语言环境的配置保留为千位分隔符.

As a bonus, this way you keep your locale's configuration as in thousand separator.

编辑
我添加了此以前删除的选项，因为它似乎对OP很有用:

EDIT
I add this previously removed option as it seems that was useful to the OP:

Double.valueOf(documentNumber).intValue();

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