Java 正则表达式 2

http://www.verejava.com/?id=16994940894528

package com.reg;

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

public class TestMethod
{
	public static void main(String[] args)
	{
		test2();
	}
	/**
	 * boolean 		find(int start) 
 
 String 			group(int group) 
 int 				groupCount() 
 int 				start(int group) 
 int 				end(int group) 
*/
	public static void test2()
	{
		String str="i love you good morning how are you ";
		Pattern p=Pattern.compile("(\\b[a-zA-Z]{3}\\b)|(\\b[a-zA-Z]{4}\\b)");
		Matcher m=p.matcher(str);
		System.out.println(m.groupCount());
		while(m.find())
		{
			System.out.println(m.start(2)+","+m.end(2));
			System.out.println(m.group(2));
		}
		
	}
	/**
	 * boolean 		find() 
 String 			group()
 int 				start()
 int 				end()


	 */
	public static void test1()
	{
		String str="i love you good morning how are you";
		Pattern p=Pattern.compile("\\b[a-zA-Z]{3}\\b");
		Matcher m=p.matcher(str);
		while(m.find())
		{
			System.out.println(m.start()+","+m.end());
			System.out.println(m.group());
		}
		
	}
	
	
}

http://www.verejava.com/?id=16994940894528