个人积累的实用工具类，包括一些很经典的常用功能的java类。-Personal accumulation of practical tools, including some very common features classic java class.

使用JAVA语言获取IP 和域名的功能，能够获取本机IP地址、机器名，以及远程服务器的IP地址！-Using the JAVA language functions for IP and domain, have access to the local IP address, machine name, and the remote server IP address!