how to count special character in a string

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String Functions how to count delimiter in string line

I have a string as str = "one$two$three$four!five@six$" now how to count Total number of "$" in that string using java code.

You can get more ideas from this one: [Occurences of substring in a string](http://stackoverflow.com/questions/767759/occurences-of-substring-in-a-string) — Bigger, Jul 20 '12 at 06:48

Bigger · Accepted Answer · 2012-07-20T06:54:22.793

8

Using replaceAll:

    String str = "one$two$three$four!five@six$";

    int count = str.length() - str.replaceAll("\\$","").length();

    System.out.println("Done:"+ count);

Prints:

Done:4

Using replace instead of replaceAll would be less resource intensive. I just showed it to you with replaceAll because it can search for regex patterns, and that's what I use it for the most.

Note: using replaceAll I need to escape $, but with replace there is no such need:

str.replace("$");
str.replaceAll("\\$");

edited Jul 20 '12 at 06:54

answered Jul 20 '12 at 06:33

Bigger

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both are correct ,, thank u very much for both of u,, i use second method,, its easy – sivanesan1 Jul 20 '12 at 06:49

score 3 · Answer 2 · answered Jul 20 '12 at 06:31

3

You can just iterate over the Characters in the string:

    String str = "one$two$three$four!five@six$";
    int counter = 0;
    for (Character c: str.toCharArray()) {
        if (c.equals('$')) {
            counter++;
        }
    }

answered Jul 20 '12 at 06:31

Keppil

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score 2 · Answer 3 · edited Jul 20 '12 at 06:47

2

String s1 = "one$two$three$four!five@six$";

String s2 = s1.replace("$", "");

int result = s1.length() - s2.length();

edited Jul 20 '12 at 06:47

Jason Sturges

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answered Jul 20 '12 at 06:37

AncerHaides

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how to count special character in a string

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