此程序是java基础知识的例子,是对数据读取的小程序代码,用的关键字是StringBuffer-basic knowledge of java example, the data is read the small code, the keyword is StringBuffer

这是一个用java代码写的控制台应用小程序，它能实现通讯录的基本功能，增加联系人，删除联系人，修改联系人，查询联系人。-This is a console application code written in java applet, it can achieve the basic functions of contacts, add contacts, delete contacts, modify contacts, inquiries contact.