这是一个拥有GUI的Applet，实现地址簿的功能，当在每一个框里面输入地址簿信息，就可以将信息写到文件中。并可以通过地址簿查看已有的地址信息。-This is a have a GUI applet, address book functionality inside each box, enter the address book information, the information can be written to the file. And view the existing address information through the address book.