用java语言实现通讯录，Java 字符界面通讯录，文件名 MyCommunication.java，主要实现的功能是添加信息，删除信息，查找信息，显示所有信息，删除所有信息！-Contacts with the java language, Java character interface contacts, the file name MyCommunication.java, the main function is to add information to achieve, delete information, find information, displays all the information, delete all the information!