Android Studio not accepting regex

Question

I am making a simple regex to determine integers of length 1-4 from string my regex is:

\d{1,4}

My Regex is valid in all online regex testing sites such as regex101 but Android studio is not accepting this Regex please find image here.

I need your help in finding any silly mistakes in this. Sample:

Regex: \d{1,4}
String: dgsdfg700
Match: 700

Please tell where am I doing wrong so studio is not accepting my regex and all other sites are.

MY code:

Pattern pattern = Pattern.compile("\\d{1,4}");

            Matcher matcher = pattern.matcher(mystring);
            if (matcher.find())
            {
             //my stuff here
            }

Are you using it in `.matches()`? `\d{1,4}` is a valid pattern to find 1 to 4 digit chunks in a string when you use `.find()`. — Wiktor Stribiżew, Feb 07 '18 at 11:52
Show us a bit more code please - your test string and output because what you have should work? — Elemental, Feb 07 '18 at 11:57
use this link : [enter link description here](https://stackoverflow.com/questions/6034523/format-an-integer-using-java-string-format#autocomment84323933) — Aslami.dev, Feb 07 '18 at 12:05

score 1 · Answer 1 · answered Feb 07 '18 at 12:03

1

public boolean isValid(final String pass){
        Pattern pattern;
        Matcher matcher;
        final String PASS_PATTERN = "^[0-9]{1,4}$";
        pattern = Pattern.compile(PASS_PATTERN);
        matcher = pattern.matcher(pass);

        return matcher.matches();
    }

answered Feb 07 '18 at 12:03

avinash

29
4

If the answer is correct or helpful, Please let me know in the comment box. – avinash Feb 08 '18 at 06:41

Android Studio not accepting regex

1 Answers1