PatternSyntaxException: String.replaceAll() android

Question

I want to remove all { } as follow:

String regex = getData.replaceAll("{", "").replaceAll("}", "");

but force close my app with log.

java.util.regex.PatternSyntaxException: Syntax error U_REGEX_RULE_SYNTAX

what have i done wrong ?

Jean Logeart · Accepted Answer · 2013-06-04 09:57:15Z

3

You need to escape {:

String regex = getData.replaceAll("\\{", "").replaceAll("\\}", "");

answered Jun 4, 2013 at 9:57

Jean Logeart

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1 Comment

works, but it is not needed to use a regex for just matching a plain char

Flexo · Accepted Answer · 2013-06-04 18:08:43Z

0

Curly brackets are used to specify repetition in regex's, therefore you will have to escape them.

Furthermore, you should also consider removing all the brackets in one go, instead of called replaceAll(String, String) twice.

String regex = getData.replaceAll("\\{|\\}", "");

answered Jun 4, 2013 at 10:02

Flexo

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donfuxx · Accepted Answer · 2014-03-04 22:41:17Z

0

For what you want to do you don't need to use a regex!

You can make use of the replace method instead to match specific chars, which increases readability a bit:

String regex = getData.replace("{", "").replace("}", "");

Escaping the \\{ just to be able to use replaceAll works, but doesn't make sense in your case

answered Mar 4, 2014 at 22:41

donfuxx

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