package cn.zhengze;
 
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
public class netbug {
 
	/**
	 * @param args
	 * @throws IOException
	 */
	public static void main(String[] args) throws IOException {
		File file = new File("mail.html");
		String regex = "\\w+@[a-zA-Z0-9]+(\\.[a-zA-Z]{2,3}){1,3}";
		List<String> mailList = getMails(file,regex);
		for (String mail : mailList) {
			System.out.println(mail);
 
		}
	}
 
	private static List<String> getMails(File file,String regex)
			throws IOException {
 
		BufferedReader bufr = new BufferedReader(new FileReader(file));
 
		Pattern p = Pattern.compile(regex);
		List<String> list = new ArrayList<String>();
		String line = null;
		while ((line = bufr.readLine()) != null) {
			Matcher m = p.matcher(line);
			while (m.find()) {
				list.add(m.group());
			}
 
		}
		return list;
	}
 
}