如何添加''\“反斜杠到字符串？ [英] How to add ''\" Backslash to a String?

问题描述

我有一个

String a = "51109965.xml";

我需要添加此字符：'\'。所以最后我会得到一个新字符串\ 51109965.xml。

I need to add this character: '\'. So at the end I will get a new string "\51109965.xml".

我正在尝试使用此命令：

I am trying to use this command:

StringBuilder PathBufferXML_new_Provider = new StringBuilder().append("\").append("51109965").append(".xml");  

但因为此符号'\'保存，我收到一个错误。
如何解决这个问题？

But because this sign '\' is saved, I get an error. How can I solve this issue?

推荐答案

在Java中， \ 是一个转义字符。这意味着，它逃脱了以下标志的原始含义。例如，当想要打印具有特殊含义的时，他可以写 System.out.println（\）; 。让我们试着找到你的问题的答案，可以重构为：

In Java, \ is an escape character. It means, that it escapes the original meaning of the following sign. For example, when one wants to print " which has a special meaning, he can write System.out.println("\"");. Let's try to find the answer to your question which could be refactored to:

如何打印 \ 在Java中，因为它是一个从特殊字符中逃脱特殊含义的特殊字符？

How can I print \ in Java, as it's a special character which escapes special meaning from the special characters?

System.out.println（\\）; 将是您正在寻找的内容，因为它已转义为 \ character。

System.out.println("\\"); will be what you're looking for as it's escaped speacial meaning of a \ character.

...并且非常重要：Java中的字符用单引号表示：'\'而不是\表示 String 对象，其对象的私有字段为 char [] 。

...and a very important thing: characters in Java are represented in single quotes: '\' instead of "\" which represents a String object which has a private field of type char[].

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