Windows计算器，是Windows操作系统自带计算器,，可以帮助用户完成数据的运算，它可分为“标准型”和“科学型”，本章的仿Windows计算器是标准型的Java实现，标准型Windows计算器实现的主要功能有：四则运算；求倒数；求开方；存储计算结果；读取计算结果；累积计算结果。

使用到JFrame和JPanel两个Swing容器，使用到JTextField和JButton两个Swing容器，使用BorderLayout和GridLayout做两个布局器，以及使用到事件、事件监听器和事件适配器等。

-Windows Calculator is a Windows operating system comes with calculator, that can help users to complete data operations, it can be divided into " standard"　and " science-based"　imitation of this chapter is the standard Windows calculator to achieve types of Java, the standard Type Windows calculator to achieve the main features are: arithmetic　seek reciprocal　seeking prescr iption　store results　read the results　cumulative results. Used two Swing JFrame and JPanel container, use the Swing JTextField and JButton two containers, use BorderLayout and GridLayout layout of the two devices do, and the use of the event, the event listener and event adapters.