reluctant 量词 [X{n,m}?] 匹配

说明

reluctant 量词 [X{n,m}?] 匹配 X 至少出现 n 次但不超过 m 次。

示例

以下示例显示了 reluctant 量词的用法。

package com.tutorialspoint;

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

public class ReluctantQuantifierDemo {
   private static final String REGEX = "T{2,3}?";
   private static final String INPUT = "abcdTatTTfgfgTTTtrtetTTTTW";

   public static void main(String[] args) {
      // create a pattern
      Pattern  pattern = Pattern.compile(REGEX);
      
      // get a matcher object
      Matcher matcher = pattern.matcher(INPUT); 

      while(matcher.find()) {
         //Prints the start index of the match.
         System.out.println("Match String start(): "+matcher.start());
      }
   }
}

让我们编译并运行上述程序，这将产生以下结果 -

Match String start(): 7
Match String start(): 13
Match String start(): 21
Match String start(): 23