java计算器实验报告_2.pdf

课程设计论文 设计题目： java 计算器 学生姓名： 指导教师： 专业名称： 所在院系： 秦皇岛职业技术学院信息工程系 摘 要 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。该程序是一个图形界面的java 计算器,其界面主要采用了swing包， 程序实现了： （1）实现简单加、减、乘、除的运算。 （2）实现除了加、减、乘、除按钮外其他按钮功能。 （3）给软件添加一个编辑、查看、帮助的主菜单。 （4）在数据输入方面，提高程序代码的健壮性，增强其对非法输入数 据的识别能力。 （5）科学型计算器与标准计算器之间的菜单切换。 Java 的早期版本以来，抽象窗口工具包为用户界面组件提供了平台独 立的API。在AWT 中，每个组件都由一个原生的等同组件生成和控制，这个原生组 件是由当前的图形窗口系统决定的。 与此相对，Swing 组件经常被描述为轻量级的，因为它们不需要操作 系统本身所带窗口工具包的原生资源来生成。 I 秦皇岛职业技术学院信息工程系 目 录 第 1章 概要设计············································································1 1.1查找资料···············································································1 1.2 选题······················································································1 1.3 标准型计算器界面设计····························································1 1.4 本章小节···············································································3 第2 章 程序整体设计说明·······························································4 2.1程序中所用到的变量·······························································4 2.2 程序部分源代码及注释····························································4 2.3 本章小节··············································································15 第3 章 程序运行效果····································································16 3.1程序运行主界面····································································16 3.2 程序中各按钮运行界面···························································16 3.3 本章小节··············································································20 第4 章 设计中遇到的重点及难点····················································21 4.1设计中遇到的重点···················································