CODEWITHSUNDEEP
javareplace
Smajl
Smajl

Reputation: 7995

How to use replaceAll when input contains spaces

I have a newbie question about replaceAll method on String. It works fine as long as the input does not contain any type of space (breaking/non-breaking etc).

How to sanitize the input so it covers all cases for special space characters and I can use something like this:

String replaced = replaced.replaceAll("my-test (2)", "test"); // not working

I tried various types of regex with \\s, \u00A0 etc.

EDIT: I noticed that the braces are also causing some problems with replaceAll.

This is my case:

"my-value (2)".replaceAll("my-value (2)", "test);

Upvotes: 0

Views: 109

Answers (4)

Krishna Mohan Shakya
Krishna Mohan Shakya

Reputation: 11

Instead of using replaceAll() method, you can use replace(CharSequence target, CharSequence replacement). This will remove all the occurrence of the given string with new one. EX.

String sub=s.replace("my-test (2)", "test");

Upvotes: 0

Natsu
Natsu

Reputation: 473

This code is not going to compile. which IDE are you using? You are not even initialize the variable replaced and replaceAll() method uses regular expression. change replaceAll() to replace(). Try something like this.

String replaced = "my-test (2)";
replaced = replaced.replace("my-test (2)", "test");
System.out.println(replaced);

Upvotes: 1

Tim Biegeleisen
Tim Biegeleisen

Reputation: 520978

I would use here:

String input = "my-value (2)";
String output = input.replaceAll("\\bmy-value\\s*\\(2\\)(?!\\S)", "test");
System.out.println(output);

This prints: test

Here is an explanation of the regex pattern:

\b        word boundary
my-value  match "my-value"
\s*       zero or more whitespace characters
\(2\)     match "(2)"
(?!\S)    assert that what follows is either whitespace or the end of the input

Upvotes: 4

Ru Yu
Ru Yu

Reputation: 49

First argument of replaceAll() method is regex. "my-test (2)" contains regex group "(2)". so try to use something like replaced.replaceAll("my-test \\(2\\)", "test"));

Upvotes: 0

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