How to use pattern or matcher for replacing pattern in string?

Question

I have a String like

"Hello @[---68---] and @[---64---] and d@[---102---] . how are you all?"

Here I want to EXTRACT numbers/strings that starts with "@[---" and ends with "---]", which here is 68,64,102 and so on.

How could I make a pattern/regex for it? Any help would be appreciated. I tried a few solutions from Pattern and Matcher

Try this one https://stackoverflow.com/a/2367418/9868485 – code4rox Feb 18 '19 at 07:05 — code4rox, Feb 18 '19 at 07:05

score 1 · Accepted Answer · answered Feb 18 '19 at 07:15

Try out this:

 Pattern MY_PATTERN = Pattern.compile("\\[(.*?)\\]");
        Matcher m = MY_PATTERN.matcher("Hello @[---68---] and @[---64---] and d@[---102---]");
         while (m.find()) {
           String s = m.group(1);
           System.out.println(s.split("---")[1]);
       }

score 0 · Answer 2 · answered Feb 18 '19 at 07:06

Try below code to get numbers form String:

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class RegexExamples {
    public static void main(String[]args) {
        Pattern pattern = Pattern.compile("numFound=\"([0-9]+)\"");
        Matcher matcher = pattern.matcher("");

        if (matcher.find()) {
            System.out.println(matcher.group(1));
        }
    }
}

How to use pattern or matcher for replacing pattern in string?

2 Answers2