하위 표현식/메타 문자 "(?> re) "는 역추적 없이 독립 패턴과 일치합니다.
예
import java.util.Scanner; import java.util.regex.Matcher; import java.util.regex.Pattern; public class PatternExample { public static void main(String args[]) { //Reading String from user System.out.println("Enter a String"); Scanner sc = new Scanner(System.in); String input = sc.next(); String regex = "(?>[0-9])"; //Compiling the regular expression Pattern pattern = Pattern.compile(regex); //Retrieving the matcher object Matcher matcher = pattern.matcher(input); //verifying whether match occurred boolean bool = matcher.find(); if(bool) { System.out.print("Match found"); } else { System.out.print("Match not found"); } } }
출력
Enter a String 9848022338 Match found