Missing closing bracket in character class near index 13 |\?*<":>+[]/' My code:
Pattern.compile("|\\?*<\":>+[]/'").matcher(name).matches()
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Wiktor Stribiżew
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Fajar Nur P
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1The square brackets have nothing inside them. Java thinks that you haven't ended the square brackets – user Apr 17 '20 at 14:44
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2most of your characters need to be escaped if you want to use them as characters and not modifiers/alternators/etc. – jhamon Apr 17 '20 at 14:44
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Please tell us what you'd like to match. – Przemysław Głębocki Apr 17 '20 at 14:44
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In Java, a ``\`` is never just a ``\"`` (except when it is). Regular expressions and ``\`` is a nightmare. – Elliott Frisch Apr 17 '20 at 14:49
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all chars inside ```"``` from ```|``` to ```'``` – Fajar Nur P Apr 17 '20 at 14:49
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You can find plenty of website to try and test you regex here: https://stackoverflow.com/questions/4736/learning-regular-expressions – jhamon Apr 17 '20 at 14:56
1 Answers
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You may use
Pattern.compile("[|\\\\?*<\":>+\\[\\]/']+").matcher(name).matches()
The regex means:
[- start of a positive character class:|- a pipe\\- a backslash (requires additional backslashes in the string literal,"\\\\")?- a question mark*- an asterisk<- an open angle bracket"- a double quotationmark:- a colon>- a close angle bracket+- a plus\[- a[char (must be escaped when[is inside a character class)\]- a]char (must be escaped when]is inside a character class)/- a forward slash'- a single quotation mark
]+- end of character class, 1 or more occurrences.
So, this will validate a string that only consists of 1 or more occurrences of these chars. If you need the opposite, add ^ after the first [:
Pattern.compile("[^|\\\\?*<\":>+\\[\\]/']+").matcher(name).matches()
// ^
String name = "Wiktor Stribiżew";
System.out.println(Pattern.compile("[^|\\\\?*<\":>+\\[\\]/']+").matcher(name).matches());
// => true
Wiktor Stribiżew
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I try this but my app still error. ```Pattern.compile("[^|\\?*<\":>+\\[\\]/']+").matcher(name).matches()``` – Fajar Nur P Apr 17 '20 at 15:12
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@FajarNurP What app? Is it Java? Then [it works](https://ideone.com/GwWsCB). Post your code that does not. – Wiktor Stribiżew Apr 17 '20 at 15:14
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@FajarNurP What is the issue now, if you use ``"[^|\\\\?*<\":>+\\[\\]/']+"``? – Wiktor Stribiżew Apr 17 '20 at 15:16
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Yes, Java (Android). my app not force close but freze for long time – Fajar Nur P Apr 17 '20 at 15:20
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You did not use my code. Use `"[^|\\\\?*<\":>+\\[\\]/']+"`. Next, if the error you had is gone, the current question is answered. – Wiktor Stribiżew Apr 17 '20 at 15:25
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I use your code but my app still freze Sir. Including my keyboard frezed to – Fajar Nur P Apr 17 '20 at 15:31
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