这一道java面试题是在很早出来的时候，在一家大型的上市公司面试的题，不过当时交了白卷。现在将这道java面试题的答案整理出来。package com.buyli.interview;/* Copyright 2012* java面试题* version 创建时间：Created on 2012-10-17* author 作者：Create by www.360buyli.com* Email: 360buyligmail.com* description 如何在指定的内容中找出指定字符串的个数*/import java.io.*;import java.util.regex.*;public class Word/ 查找其中字符串”me”单词的数量private static final String matcherStr = “me”;public static void main(String args) try BufferedReader br = new BufferedReader(new FileReader(“E:content.txt”);StringBuffer sb = new StringBuffer();String line = br.readLine();while (line != null) sb.append(line);line = br.readLine();System.out.println(sb.toString(); /打印出文件的内容Pattern expression = Pattern.compile(“a-zA-Z+”);Matcher matcher = expression.matcher(sb.toString().toLowerCase();int i = 0;while (matcher.find() if (matcher.group().toLowerCase().equals(matcherStr.toLowerCase() i+;System.out.println(“此单词的数量是:” + i + “个”); catch (Exception e) System.out.println(e.toString();