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I wanted to extract what ever is within the below tokens 

${FNAME} ${LNAME} ${123}

FNAME LNAME 123.

I tried the below.

public static void main(String[] args) {

    String input = "{FNAME} ${LNAME} ${123}";

    Pattern p = Pattern.compile("\\$\\{");
    Matcher m = p.matcher(input);


    while (m.find()) {
        System.out.println("Found a " + m.group() + ".");

    }

}

Ended up wrongly. Beginner to reg expressions.

user3362080
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1 Answers1

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You should use lazy quantifier ? and capture group () like this.

Regex: \$\{(.*?)\}

Replacement to do: \1 for first captured group.

Regex101 Demo