Java regular expression and pattern

Question

I have a outlook message with body. I need to get strings of certain pattern S15345,S15366 etc.

How can i achieve this in java?

I tried giving like below,

 String array[] = body.split("[S[0-9]]");

What Strings are you trying to create and place into in the array? And why not simply split on the comma?: body.split(",");? — Hovercraft Full Of Eels
– Hovercraft Full Of Eels, Commented Jun 16, 2018 at 22:47

Youcef LAIDANI · Accepted Answer · 2018-06-16 22:57:32Z

3

In this case better way is to use Pattern Matcher with this regex S\d{5} or if the pattern can contain one or more digits you can use S\d+ instead

String body = ...
Pattern pattern = Pattern.compile("S\\d{5}");
Matcher matcher = pattern.matcher(body);
List<String> result = new ArrayList<>();
while (matcher.find()){
    result.add(matcher.find());
}

If you are using Java 9+ you can use :

String body = ...
List<String> result = Pattern.compile("S\\d{5}")
        .matcher(body)
        .results()
        .map(MatchResult::group)
        .collect(Collectors.toList());

edited Jun 16, 2018 at 22:57

answered Jun 16, 2018 at 22:50

Youcef LAIDANI

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