Java实现的简单电话号码储存

钟超

于 2011-11-11 00:48:16 发布

阅读量4.5k

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分类专栏： Lang. - Java 文章标签：电话 java string null class file

本文链接：https://blog.youkuaiyun.com/Poechant/article/details/6958303

版权

本文介绍了使用Java编程实现一个简单的电话号码储存系统，通过测试驱动程序确保功能的正确性。主要内容涉及字符串处理、文件操作以及类的设计。

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package com.sinosuperman.example;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.StringTokenizer;
import java.util.TreeMap;

import javax.swing.JOptionPane;

public class PhoneNoteBook {
	
	private final File phoneNoteBookFile;
	
	private TreeMap<String, String> phoneNoteBookMap;
	
	public PhoneNoteBook(String fileName) throws IOException {
		phoneNoteBookMap = new TreeMap<String, String>();
		phoneNoteBookFile = new File(fileName);
		loadAllRecords();
	}
	
	private void loadAllRecords() throws IOException {
		BufferedReader reader = new BufferedReader(new FileReader(phoneNoteBookFile));
		String line = reader.readLine();
		while (line != null) {
			StringTokenizer str = new StringTokenizer(line, "\t");
			String name = str.nextToken();
			String phone = str.nextToken();
			phoneNoteBookMap.put(name, phone);
			line = rea