Java 正则表达式包括除某些字母外的所有字母
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Java Regex include all letters of the alphabet except certain letters
提问by user3367701
What I need to do is to determine whether a word consists of letters except certain letters. For example I need to test whether a word consists of the letters from the English alphabet except letters: I, V and X.
我需要做的是确定一个单词是否由某些字母以外的字母组成。例如，我需要测试一个单词是否由英文字母表中的字母组成，除了字母：I、V 和 X。
Currently I have this long regex for the simple task above:
目前我有这个很长的正则表达式来完成上面的简单任务：
Pattern pattern = Pattern.compile("[ABCDEFGHJKLMNOPQRSTUWYZ]+");
Any of you know any shorthand way of excluding certain letters from a Java regex? Thanks.
你们中有人知道从 Java 正则表达式中排除某些字母的速记方法吗？谢谢。
回答by Keppil
You can use the &&operator to create a compound character class using subtraction:
您可以使用&&运算符通过减法创建复合字符类：
String regex = "[A-Z&&[^IVX]]+";
回答by p.s.w.g
You could simply specify character ranges inside your character class:
您可以简单地在字符类中指定字符范围：
[A-HJ-UWYZ]+
回答by Avinash Raj
回答by Viktor13710
'&&' didn't work for me,
“&&”对我不起作用，
used: (?:(?![IVX])[A-Z])
用过的： (?:(?![IVX])[A-Z])
