Java RegEx是否不区分大小写？ [英] Is Java RegEx case-insensitive?

问题描述

在Java中，当执行replaceAll寻找正则表达式模式时：

In Java, when doing a replaceAll to look for a regex pattern like:

replaceAll("\\?i\\b(\\w+)\\b(\\s+\\1)+\\b", "$1"); 

（删除重复的连续不区分大小写的单词，例如测试测试），我不知道在哪里我把？我。我读到它应该在开始时，但是如果我把它取出然后我会捕获重复的连续单词（例如测试测试），但不是不区分大小写的单词（例如测试测试）。所以我想我可以在开头添加？i但似乎没有完成工作。有什么想法吗？谢谢！

(to remove duplicate consecutive case-insensitive words, e.g. Test test), I'm not sure where I put the ?i. I read that it is supposed to be at the beginning, but if I take it out then i catch duplicate consecutive words (e.g. test test), but not case-insensitive words (e.g. Test test). So I thought I could add the ?i in the beginning but that does not seem to get the job done. Any thoughts? Thanks!

推荐答案

RegexBuddy 告诉我你是否想在开头加入它，这是正确的语法：

RegexBuddy is telling me if you want to include it at the beginning, this is the correct syntax:

"(?i)\\b(\\w+)\\b(\\s+\\1)+\\b"

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