利用Java语言提供的Socket技术，建立一个C/S模式的应用，允许客户端用户输入2个整数，服务器端接收这2个整数，并计算出它们的和、差、积、商，最后送回客户端。-Socket provided by the use of Java language technologies, the establishment of a C/S mode of application, allowing the client user to enter two integers, the server-side receives the two integers, and calculate their sum, difference, product, business and finally returned to client.