Java正则表达式字符类简单的例子

package com.codingdict;



import java.util.regex.Matcher;

import java.util.regex.Pattern;



public class CharacterClassDemo {

   private static final String REGEX = "[abc]";

   private static final String INPUT = "dbcabcabc";



   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());

      }

   }

}