简易计算器不需要很高深的算法，对于数字计算的唯一要求就是在除数为零的时候要加以判断和处理，其他的就是窗口布局和功能完善了；首先：计算器需要一个显示按键结果的TextField部件，再就是添加很多Button了；为了界面的美观，为Frame添加两个panel，一个布局用BorderLayout.NORTH，另一个用GridLayout分成均等的几行几列；窗口的整体布局就基本成形了。剩下的为Button添加事件及响应事件的结果，编写程序实现。-simple calculators do not need high deep algorithm, figures for the only requirement is the divisor to zero when the judgment and, The rest is window layout and functions; First : need a calculator button shows the results of the TextField component, Then, it took a lot of added Button; To the beautiful interface, Frame added two panel, BorderLayout.NORTH using a layout, Another use GridLayout divided into equal out several lines; window on the overall layout of the basic shaping. Button left to add events and respond to the findings, preparation processes.