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A Matcher examines the results of applying a pattern.
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import java.util.regex.*;   
  
public class FindA{   
  public static void main(String args[])   
  throws Exception{   
  
    String candidate =   
     "A Matcher examines the results of applying a pattern.";   
    String regex = "\\ba\\w*\\b";   
    Pattern p = Pattern.compile(regex);   
    Matcher m = p.matcher(candidate);   
    String val = null;   
    System.out.println("INPUT: " + candidate);   
    System.out.println("REGEX: " + regex +"\r\n");   
    while (m.find()){   
      val = m.group();   
      System.out.println("MATCH: " + val);   
    }   
    if (val == null) {   
  &nb


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JavaÕýÔò±í´ïʽ

package com.sy.grasp;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class RegularExpression {
 /**
  * @param args
  * @throws IOException
  */
 public static void main(String[] args) throws IOException {
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