如何在包含dot的java中替换String？ [英] How to replace a String in java which contains dot?

问题描述

我需要替换包含空格和句点的String。我尝试过以下代码：

I need to replace a String which contains white space and periods. I have tried with the following code:

String customerName = "Mr. Raj Kumar";

customerName = customerName.replaceAll(" ", "");
System.out.println("customerName"+customerName);

customerName = customerName.replaceAll(".", "");
System.out.println("customerName"+customerName); 

但这导致：

customerName Mr.RajKumar

customerName Mr.RajKumar

和

customerName

customerName

我从第一个SOP获得了正确的客户名称，但是从第二个SOP我没有得到任何值。

I am getting the correct customer name from the first SOP, but from second SOP I am not getting any value.

推荐答案

转义点，否则它将匹配任何字符。这种转义是必要的，因为 replaceAll（）将第一个参数视为正则表达式。

escape the dot, or else it will match any character. This escaping is necessary, because replaceAll() treats the first paramter as a regular expression.

customerName = customerName.replaceAll("\\.", "");

你可以用一个陈述完成整个事情：

You can do the whole thing with one statement:

customerName = customerName.replaceAll("[\\s.]", "");

这篇关于如何在包含dot的java中替换String？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！