java 使用replaceAll 将\n替换为 \\n
时间: 2023-09-18 21:12:42 浏览: 98
replaceall.java
在Java中使用replaceAll方法将"\n"替换为"\\n"时,需要使用双反斜杠来表示转义字符。具体操作如下:
1. 创建一个字符串变量,用于存储需要替换的字符串。
2. 使用replaceAll方法,并传入"\n"作为第一个参数,"\\\\n"作为第二个参数。双反斜杠表示转义字符本身的转义,所以要使用四个反斜杠来表示两个反斜杠。
3. 将替换后的字符串赋值给原始字符串变量。
以下是一个示例代码:
```java
String str = "This is a\nnew line.";
str = str.replaceAll("\n", "\\\\n");
System.out.println(str);
```
输出结果为:"This is a\\nnew line.",即将"\n"替换为"\\n"后的字符串。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [关于java中replaceAll替换\的有关问题](https://blog.csdn.net/weixin_42504048/article/details/116046192)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *2* [Java中replaceAll方法替换\r\n](https://blog.csdn.net/baidu_31956557/article/details/82152358)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *3* [java编写智能合约-简单的用java代码实现智能合约.pdf](https://download.csdn.net/download/qq_43934844/87504608)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 33.333333333333336%"]
[ .reference_list ]
阅读全文