用正则表达式找出一个文件中有多少个邮箱地址

本人自己亲手写的，demo版，先备份一下。 

import java.io.*;

import java.util.regex.*;

public class FindEmail {

public static void main(String args[]) {

Pattern p = Pattern.compile("[\\w[.-]]+@[\\w[.-]]+\\.\\w+");

File f = new File("D:\\1.htm");

try {

StringBuffer sb = new StringBuffer();

FileReader fr = new FileReader(f);

BufferedReader br = new BufferedReader(fr);

String s;

try {

s = br.readLine();

while(s!=null){

Matcher m = p.matcher(s);

while(m.find()){

System.out.println(m.group());

}

s = br.readLine();

}

} catch (IOException e) {

e.printStackTrace();

}

} catch (FileNotFoundException e) {

e.printStackTrace();

}

}

}