How to escape "[]" chars in regular expressions

Question

I have a stream, which has the following expression:

.map(l -> l.replaceAll("[,.!?:;]", "")

As you can see I want to take a string, and if a string contains one of the values ,.!?:; I want to remove them.

I also want to remove These two symbols: [ ]

When I add it in the sequence:

.map(l -> l.replaceAll("[,.!?[]:;]", "")

The idea gives me an error, unclosed character class. How can I include these two symbols in the sequence as well?

Know that has nothing to do with the stream, but with regex – azro Aug 07 '21 at 15:19 — azro, Aug 07 '21 at 15:19

score 1 · Accepted Answer · answered Aug 07 '21 at 15:16

1

You escape special characters with \. Note that \ is itself a special character. So something like

.map(l -> l.replaceAll("[,.!?\\[\\]:;]", "")

answered Aug 07 '21 at 15:16

Elliott Frisch

1 Answers1