Java 正则匹配 usePattern 方法

package com.codingdict;



import java.util.regex.Matcher;

import java.util.regex.Pattern;



public class MatcherDemo {

   private static String REGEX = "(a*b)(foo)";

   private static String INPUT = "aabfooaabfooabfoob";



   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 subsequence captured by the given group.

          System.out.println("Second Capturing Group, (foo) Match String start(): "+matcher.start(1));

      }  

      matcher.reset();

      matcher.usePattern(Pattern.compile("(a*b)(foob)"));

      while(matcher.find()) {

     //Prints the start index of the subsequence captured by the given group.

     System.out.println("Second Capturing Group, (fooab) Match String start(): "+matcher.start(1));

      }  

   }

}