如何使用 replaceAll() 方法，如何指定我的正则表达式来删除任何黑斜线和字符？

Question

In this string below, I need to remove the backslash and the char immediately after it. Code snippet below

String raw;
String s = "###\\A";)
String formatted = raw.replaceAll("\\.?", "");
System.out.println(formatted)

when I printed out the formatted, I got ###A instead of ### it appears that in the regex "\.?", the? is not doing its job. I may be missing something here. My goal is to get rid of the // and the A. Any help will be appreciated

Answer 1

Try this REGEX \\\\[AZ]?

String s = "###\\ZABCDE";
String formatted = s.replaceAll("\\\\[A-Z]?", "");
System.out.println(formatted);

, output

###ABCDE

Regex Oracle doc