예제가 있는 Java의 패턴 UNIX_LINES 필드

이 플래그는 Unix 라인 모드를 활성화합니다. Unix 라인 모드에서는 '\n'만 라인 종결자로 사용되고 '\r'은 리터럴 문자로 처리됩니다.

예시 1

import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class LTERAL_Example {
   public static void main(String[] args) {
      String input = "This is the first line\r"
         + "This is the second line\r"
         + "This is the third line\r";
      //Regular expression to accept date in MM-DD-YYY format
      String regex = "^T.*e";
      //Creating a Pattern object
      Pattern pattern = Pattern.compile(regex, Pattern.UNIX_LINES);
      //Creating a Matcher object
      Matcher matcher = pattern.matcher(input);
      int count = 0;
      while(matcher.find()) {
         count++;
         System.out.println(matcher.group());
      }
      System.out.println("Number of matches: "+count);
   }
}

출력

This is the first line
This is the second line
This is the third line
Number of matches: 1

반면 일반 모드에서 \r은 캐리지 리턴으로 처리됩니다.

예시 2

import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class LTERAL_Example {
   public static void main(String[] args) {
      String input = "This is the first line\r"
         + "This is the second line\r"
         + "This is the third line\r";
      //Regular expression to accept date in MM-DD-YYY format
      String regex = "^T.*e";
      //Creating a Pattern object
      Pattern pattern = Pattern.compile(regex);
      //Creating a Matcher object
      Matcher matcher = pattern.matcher(input);
      int count = 0;
      while(matcher.find()) {
         count++;
         System.out.println(matcher.group());
      }
      System.out.println("Number of matches: "+count);
   }
}

출력

This is the first line
Number of matches: 1