该小程序是老师布置的一个实验，实现的功能是：得到本机MAC地址和IP地址，得到局域网内所有机器的MAC和IP地址，基本功能强大实用，且附有文档。-Teacher of the applet is an experimental arrangement, the function is to achieve: get the local MAC address and IP address, get all the machines LAN MAC and IP addresses, the basic functions of a powerful and practical, and with the document.