import java.util.regex.*; 
import java.util.*; 

/**
 * Description:
 * <br/>Copyright (C), 2005-2008, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee kongyeeku@163.com
 * @version  1.0
 */

public class TestReplace 
{

	public static void main(String[] args)
	{
		String[] msgs =
		{
			"Java has regular expressions in 1.4", 
			"regular expressions now expressing in Java", 
			"Java represses oracular expressions" 
		};
		Pattern p = Pattern.compile("re\\w*");
		Matcher matcher = null;
		for (int i = 0 ; i < msgs.length ; i++)
		{
			if (matcher == null)
			{
				matcher = p.matcher(msgs[i]); 
			}
			else
			{
				matcher.reset(msgs[i]);
			}
			System.out.println(matcher.replaceAll("哈哈\2"));
		}
	} 
}