Java替换方法，替换为空字符 [英] Java replace method, replacing with empty character

问题描述

假设我在字符串格式中有以下内容：

Suppose I have the following in String format:

2.2

我想用空格替换小数点，使它看起来像这样：

And I want to replace the decimal point with an empty space, to make it look like this:

22

我该怎么做？我认为替换会有这个伎俩，但是当我这样尝试时：

How do I do this? I thought replace would have done the trick, but when I try it like this:

string.replace（'。'，''）;

我收到''<的错误/ code>因为它应该不是一个角色。这是有道理的，那么我怎么能完成我想要的呢？

I get an error with the '' because it supposedly isn't a character. That makes sense, so how else can I accomplish what I want?

推荐答案

如果你只是用双引号换单，这将是因为空字符串是合法值而起作用。似乎许多人忽略了 replace（CharSequence，CharSequence）实际上对字符串参数起作用的事实：）

If you just exchange single for double quotes, this will work because an empty string is a legal value. It seems that many people overlook the fact that replace(CharSequence, CharSequence) actually works on string arguments :)

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