Why does not work multiple selection?

Question

I need to get all numbers from a string.

        Pattern pattern = Pattern.compile("(([1-9]\\d*(\\.|\\,)\\d*)|0{1}(\\.|\\,)\\d*|(\\.|\\,)\\d+|([1-9]\\d*|0{1}))"); 
        Matcher matcher = pattern.matcher(text);      
        boolean matches = matcher.matches();
        log.info("matches: {}", matches);

        if (matches) {

          log.info("matches value: {}", text);

        } else {
            while (matcher.find()) {
                String value = matcher.group();                    
                log.info("value: {}", value);                                                            
            }
     }

When text variable equals to " 111 222" it works (111,222), but if I set "111 222" (without first white space) only get (222).

I checked on regex101.com (with g flag) and pattern works as expected.

I get 111 and 222, with or without space at begining, with your code ! — guillaume girod-vitouchkina, Dec 13 '15 at 00:31
Don't know Java, but can't you use `pattern.matches` or something? Equivalent regex `(?:(?:[1-9]\d*|0)(?:[,.]\d*)?|\.\d+)` — , Dec 13 '15 at 01:08

score 1 · Answer 1 · edited May 23 '17 at 12:30

1

matches and find begin to eat your string.

2 solutions:

or throw your test with matches()

or reset after:

 matcher.reset();

And see that: Difference between matches() and find() in Java Regex

edited May 23 '17 at 12:30

Community

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answered Dec 13 '15 at 01:06

guillaume girod-vitouchkina

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Thus, to get all numbers I need only call the method find(). Right? – rdm Dec 13 '15 at 15:20

Why does not work multiple selection?

1 Answers1