Java正则表达式和模式

Question

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

How can i achieve this in java?

I tried giving like below,

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

Answer 1

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());