本文围绕Java编程语言在网络编程方面的具体应用，论述了使用面向对象方法，对计算器程序进行需求分析、概要设计、详细设计，最后使用Java编程实现的全过程。在编程我们使用的java语言，是目前比较流行的编程语言。在当今这个网络的时代，java语言在网络编程方面的优势使得网络编程有了更好的选择。Java语言最大的特点是具有跨平台性，使其不受平台不同的影响，得到了广泛的应用。-This paper focuses on network programming in the Java programming language, the specific application, discusses the use of object-oriented approach, the calculator program needs analysis, outline design, detailed design, and finally using the Java programming as a whole. We use the java programming language, is the more popular programming languages. In today' s Internet age, java language programming in the network the network programming with the advantages of making a better choice. The greatest feature of the Java language is a cross-platform, make it free from the effects of different platforms, has been widely used.