In java when converting a char array with spaces to a String how to remove the spaces in that String?

Question

String output = new String(encryptText);
output = output.replaceAll("\\s", "");
return output;

replaceAll("\\s", ""); doesn't work

your code seems to be fine. it should work. I would check what encryptText looks like — gefei, Apr 11 '13 at 07:35
could you please share the input string? because str.replaceAll("\\s", ""); should work. You can also try str.replaceAll(" ", ""); — Abhinaba Basu, Apr 11 '13 at 07:36
You should add the error you get or an example of why the solution you posted doesn't work or your question seems to be a duplicate of this one: http://stackoverflow.com/questions/5455794/removing-whitespace-from-strings-in-java — Luigi Massa Gallerano, Apr 11 '13 at 07:36

score 2 · Answer 1 · answered Apr 11 '13 at 07:33

2

String output = new String(encryptText);
output = output.replaceAll(" ", "");
return output;

answered Apr 11 '13 at 07:33

Petar Ivanov

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We have to say that this solution works only for "pure" whitespace characters. It doesn't catch "special" whitespace characters like tab (\t). Instead, the solution based on java.util.regex.Pattern: replaceAll("\\s", "") does work for every whitespace character: [ \t\n\x0B\f\r] – Luigi Massa Gallerano Apr 11 '13 at 08:24

score 1 · Answer 2 · answered Sep 09 '15 at 23:20

1

I was facing the same problem then I searched a lot and found that, it is not a space character but a null value which is transformed into string from character array. This resolved the issue for me -

output.replaceAll(String.valueOf((char) 0), "");

answered Sep 09 '15 at 23:20

Aakash Mangal

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CloudyMarble · Answer 3 · 2013-04-11T07:48:51.757

0

Your code works fine for me, see here

Anyway you can use the StringUtils.trimAllWhitespace from the spring framework:

output = StringUtils.trimAllWhitespace(output);

edited Apr 11 '13 at 07:48

answered Apr 11 '13 at 07:35

CloudyMarble

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as I understand this function not from JDK. it come with spring? – Aliaksei Bulhak Apr 11 '13 at 07:37
it saysThe method trimAllWhitespace(String) is undefined for the type – sdfasdfw Apr 11 '13 at 07:39
java.lang does not contain a class called StringUtils. Several third-party libs do, such as Apache Commons Lang or the Spring framework. In order to use it you need the relevant jar in your project classpath and import the correct class. – Luigi Massa Gallerano Apr 11 '13 at 07:40
@AlekseiBulgak yes your right, http://www.springsource.org/spring-community-download – CloudyMarble Apr 11 '13 at 07:41
Sorry gues, i have forget to mention its part of the spring framework. i updated my answer – CloudyMarble Apr 11 '13 at 07:42

score 0 · Answer 4 · answered Apr 11 '13 at 07:38

0

You could use the non-regex-version replace to do the job:

output = output.replace(" ", "");

answered Apr 11 '13 at 07:38

Marco Forberg

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score 0 · Answer 5 · answered Apr 11 '13 at 07:46

Use String.replaceAll(" ","") or if you want to do it yourself without a lib call, use this.

        String encryptedString = "The quick brown fox ";
        char[] charArray = encryptedString.toCharArray();
        char [] copy = new char[charArray.length];
        int counter = 0;
        for (char c : charArray)
        {
            if(c != ' ')
            {
                copy[counter] = c;
                counter++;
            }
        }
        char[] result = Arrays.copyOf(copy, counter);
        System.out.println(new String(result));

score 0 · Answer 6 · edited Jul 25 '23 at 06:41

0

z = z.replaceAll(" ", "");

easiest and the simplest way for removing white spaces from the char [];

edited Jul 25 '23 at 06:41

Procrastinator

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answered Jul 20 '23 at 17:57

Shainky Jain

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In java when converting a char array with spaces to a String how to remove the spaces in that String?

6 Answers6