软件工程第三次作业（杨明颢、何亚、陈志艳）小组

• 题目

          请编写一个能自动生成小学四则运算题目的 “软件”。

          让程序能接受用户输入答案，并判定对错。  

          最后给出总共 对/错 的数量。

• 需求分析

        - 基本功能

           - 系统可以自动出题（简易四则运算）；

           - 用户可以手动输入答案；

           - 显示答案的对错，错误的给出正确答案；

           - 统计四则运算的回答正确题目数。

        - 扩展功能

            在第二次作业的基础上系统设计成可视化的窗口图形。

           设计

        - 系统采用JAVA进行编程调试。

        - 系统能随机生成100以内的四则运算。

        - 本软件采用可视化窗口，提示比较清楚，用户操作简单；

        - 采用模块化思想，把源文件分成几个模块进行封装。

程序代码：

import javax.swing.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;

public class rjgc extends JFrame implements ActionListener {

    JLabel jl1, jl2, jl3, jl4, jl5, jl6, jl7, jl8, jl9;
    JTextField jf1, jf2, jf3, jf4;
    JButton jb1, jb5;

    JButton jb;
    JTextField jl21, jl22, jl23, jl24, jl25, jl26, jl27, jl28, jl29, jl210,
            jl211, jl212, jl213, jl214, jl215;

    public rjgc() {
        setTitle("简易四则运算生成器，Design By 杨明颢、何亚、陈志艳");
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setSize(800, 350);
        setLocation(250, 250);
        Container con = getContentPane();
        JPanel pan = new JPanel();

        jb1 = new JButton("出题");
        jb1.addActionListener(this);
        jl1 = new JLabel("?");
        jl2 = new JLabel("?");
        jl3 = new JLabel("答案：");
        jl4 = new JLabel("请输入答案：");
        jl5 = new JLabel("余数：");
        jl6 = new JLabel("?");
        jl7 = new JLabel("余数：");
        jl8 = new JLabel("对/错：");
        jl9 = new JLabel("?");
        jf1 = new JTextField(5);
        jf2 = new JTextField(5);
        jf3 = new JTextField(5);
        jf4 = new JTextField(5);
        jb5 = new JButton("正确答案");
        jb5.addActionListener(this);
        Box b1 = Box.createHorizontalBox();
        b1.add(jb1);
        b1.add(Box.createHorizontalStrut(20));
        b1.add(jf1);
        b1.add(Box.createHorizontalStrut(5));
        b1.add(jl2);
        b1.add(Box.createHorizontalStrut(5));
        b1.add(jf2);
        b1.add(Box.createHorizontalStrut(5));
        b1.add(jl4);
        b1.add(Box.createHorizontalStrut(5));
        b1.add(jf3);
        b1.add(Box.createHorizontalStrut(5));
        b1.add(jl5);
        b1.add(Box.createHorizontalStrut(5));
        b1.add(jf4);
        b1.add(Box.createHorizontalStrut(20));
        b1.add(jb5);
        b1.add(Box.createHorizontalStrut(5));
        b1.add(jl3);
        b1.add(Box.createHorizontalStrut(5));
        b1.add(jl6);
        b1.add(Box.createHorizontalStrut(5));
        b1.add(jl7);
        b1.add(Box.createHorizontalStrut(5));
        b1.add(jl1);
        b1.add(Box.createHorizontalStrut(5));
        b1.add(jl8);
        b1.add(Box.createHorizontalStrut(5));
        b1.add(jl9);

        jl21 = new JTextField("0");
        jl22 = new JTextField("0");
        jl23 = new JTextField("0");
        jl24 = new JTextField("0");
        jl25 = new JTextField("0");
        jl26 = new JTextField("0");
        jl27 = new JTextField("0");
        jl28 = new JTextField("0");
        jl29 = new JTextField("0");
        jl210 = new JTextField("0");
        jl211 = new JTextField("0");
        jl212 = new JTextField("0");
        jl213 = new JTextField("0");
        jl214 = new JTextField("0");
        jl215 = new JTextField("0");
        jl21.setEditable(false);
        jl22.setEditable(false);
        jl23.setEditable(false);
        jl24.setEditable(false);
        jl25.setEditable(false);
        jl26.setEditable(false);
        jl27.setEditable(false);
        jl28.setEditable(false);
        jl29.setEditable(false);
        jl210.setEditable(false);
        jl211.setEditable(false);
        jl212.setEditable(false);
        jl213.setEditable(false);
        jl214.setEditable(false);
        jl215.setEditable(false);

        Box b21 = Box.createHorizontalBox();
        b21.add(new JLabel("加法题："));
        b21.add(jl21);
        b21.add(Box.createHorizontalStrut(50));
        b21.add(new JLabel("对:"));
        b21.add(jl22);
        b21.add(Box.createHorizontalStrut(50));
        b21.add(new JLabel("错:"));
        b21.add(jl23);

        Box b22 = Box.createHorizontalBox();
        b22.add(new JLabel("减法题："));
        b22.add(jl24);
        b22.add(Box.createHorizontalStrut(50));
        b22.add(new JLabel("对:"));
        b22.add(jl25);
        b22.add(Box.createHorizontalStrut(50));
        b22.add(new JLabel("错:"));
        b22.add(jl26);

        Box b23 = Box.createHorizontalBox();
        b23.add(new JLabel("乘法题："));
        b23.add(jl27);
        b23.add(Box.createHorizontalStrut(50));
        b23.add(new JLabel("对:"));
        b23.add(jl28);
        b23.add(Box.createHorizontalStrut(50));
        b23.add(new JLabel("错:"));
        b23.add(jl29);

        Box b24 = Box.createHorizontalBox();
        b24.add(new JLabel("除法题："));
        b24.add(jl210);
        b24.add(Box.createHorizontalStrut(50));
        b24.add(new JLabel("对:"));
        b24.add(jl211);
        b24.add(Box.createHorizontalStrut(50));
        b24.add(new JLabel("错:"));
        b24.add(jl212);

        Box b25 = Box.createHorizontalBox();
        b25.add(new JLabel("总　计："));
        b25.add(jl213);
        b25.add(Box.createHorizontalStrut(50));
        b25.add(new JLabel("对:"));
        b25.add(jl214);
        b25.add(Box.createHorizontalStrut(50));
        b25.add(new JLabel("错:"));
        b25.add(jl215);

        Box b2 = Box.createVerticalBox();
        b2.add(b21);
        b2.add(b22);
        b2.add(b23);
        b2.add(b24);
        b2.add(b25);

        Box b3 = Box.createVerticalBox();
        b3.add(Box.createVerticalStrut(50));
        b3.add(b1);
        b3.add(Box.createVerticalStrut(25));
        b3.add(b2);
        b3.add(Box.createVerticalStrut(25));
        jb = new JButton("清除记录");
        jb.addActionListener(this);
        b3.add(jb);
        b3.add(Box.createVerticalStrut(50));

        pan.add(b3);
        con.add(pan);
        setVisible(true);

    }

    public static void main(String args[]) {
        rjgc main = new rjgc();
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == jb) {
            jf1.setText("");
            jf2.setText("");
            jf3.setText("");
            jf4.setText("");
            jl1.setText("?");
            jl2.setText("?");
            jl6.setText("?");
            jl9.setText("?");
            jl21.setText("0");
            jl22.setText("0");
            jl23.setText("0");
            jl24.setText("0");
            jl25.setText("0");
            jl26.setText("0");
            jl27.setText("0");
            jl28.setText("0");
            jl29.setText("0");
            jl210.setText("0");
            jl211.setText("0");
            jl212.setText("0");
            jl213.setText("0");
            jl214.setText("0");
            jl215.setText("0");
        }
        if (e.getSource() == jb1) {
            jf3.setText("");
            jf4.setText("");
            jl1.setText("?");
            jl2.setText("?");
            jl6.setText("?");
            jl9.setText("?");
            Random rand = new Random();
            int i = rand.nextInt(100);
            int j = rand.nextInt(100);
            i = i + 1;
            j = j + 1;
            if (i < j) {
                String s = Integer.toString(i);
                String y = Integer.toString(j);

                jf1.setText(y);
                jf2.setText(s);
            } else {
                String s = Integer.toString(i);
                String y = Integer.toString(j);
                jf1.setText(s);
                jf2.setText(y);
            }
            int f = rand.nextInt();
            f = rand.nextInt(4);
            if (f == 0) {
                jl2.setText("+");
            } else if (f == 1) {
                jl2.setText("-");
            } else if (f == 2) {
                jl2.setText("*");
            } else if (f == 3) {
                jl2.setText("/");
            }
        }
        if (e.getSource() == jb5) {
            int b, c, d, f, h, g, k, l, m, n, o, p;
            int r, t, u;
            r = Integer.parseInt(jl213.getText()) + 1;
            jl213.setText(Integer.toString(r));
            jl1.setText("?");
            int x, y, answer = 0;
            String z, i, j, s = null;
            x = Integer.parseInt(jf1.getText());
            y = Integer.parseInt(jf2.getText());
            z = jl2.getText();
            i = jf3.getText();
            j = jf4.getText();
            if (z == "+") {
                b = Integer.parseInt(jl21.getText()) + 1;
                jl21.setText(Integer.toString(b));
                answer = x + y;
            } else if (z == "-") {
                f = Integer.parseInt(jl24.getText()) + 1;
                jl24.setText(Integer.toString(f));
                answer = x - y;
            } else if (z == "*") {
                k = Integer.parseInt(jl27.getText()) + 1;
                jl27.setText(Integer.toString(k));
                answer = x * y;
            } else if (z == "/") {
                n = Integer.parseInt(jl210.getText()) + 1;
                jl210.setText(Integer.toString(n));
                answer = x / y;
                jl1.setText("0");
                if (x % y != 0) {
                    s = Integer.toString(x % y);
                    jl1.setText(s);
                }
            }
            String a = Integer.toString(answer);
            jl6.setText(a);
            if (i.equals(a)) {
                if (s == null) {
                    jl9.setText("对");
                    t = Integer.parseInt(jl214.getText()) + 1;
                    jl214.setText(Integer.toString(t));
                    if (z == "+") {
                        c = Integer.parseInt(jl22.getText()) + 1;
                        jl22.setText(Integer.toString(c));
                    } else if (z == "-") {
                        h = Integer.parseInt(jl25.getText()) + 1;
                        jl25.setText(Integer.toString(h));
                    } else if (z == "*") {
                        l = Integer.parseInt(jl28.getText()) + 1;
                        jl28.setText(Integer.toString(l));
                    } else if (z == "/") {
                        o = Integer.parseInt(jl211.getText()) + 1;
                        jl211.setText(Integer.toString(o));
                    }
                } else if (j.equals(s)) {
                    jl9.setText("对");
                    t = Integer.parseInt(jl214.getText()) + 1;
                    jl214.setText(Integer.toString(t));
                    if (z == "+") {
                        c = Integer.parseInt(jl22.getText()) + 1;
                        jl22.setText(Integer.toString(c));
                    } else if (z == "-") {
                        h = Integer.parseInt(jl25.getText()) + 1;
                        jl25.setText(Integer.toString(h));
                    } else if (z == "*") {
                        l = Integer.parseInt(jl28.getText()) + 1;
                        jl28.setText(Integer.toString(l));
                    } else if (z == "/") {
                        o = Integer.parseInt(jl211.getText()) + 1;
                        jl211.setText(Integer.toString(o));
                    }
                } else {
                    jl9.setText("错");
                    u = Integer.parseInt(jl215.getText()) + 1;
                    jl215.setText(Integer.toString(u));
                    if (z == "+") {
                        d = Integer.parseInt(jl23.getText()) + 1;
                        jl23.setText(Integer.toString(d));
                    } else if (z == "-") {
                        g = Integer.parseInt(jl26.getText()) + 1;
                        jl26.setText(Integer.toString(g));
                    } else if (z == "*") {
                        m = Integer.parseInt(jl29.getText()) + 1;
                        jl29.setText(Integer.toString(m));
                    } else if (z == "/") {
                        p = Integer.parseInt(jl212.getText()) + 1;
                        jl212.setText(Integer.toString(p));
                    }
                }
            } else {
                jl9.setText("错");
                u = Integer.parseInt(jl215.getText()) + 1;
                jl215.setText(Integer.toString(u));
                if (z == "+") {
                    d = Integer.parseInt(jl23.getText()) + 1;
                    jl23.setText(Integer.toString(d));
                } else if (z == "-") {
                    g = Integer.parseInt(jl26.getText()) + 1;
                    jl26.setText(Integer.toString(g));
                } else if (z == "*") {
                    m = Integer.parseInt(jl29.getText()) + 1;
                    jl29.setText(Integer.toString(m));
                } else if (z == "/") {
                    p = Integer.parseInt(jl212.getText()) + 1;
                    jl212.setText(Integer.toString(p));
                }
            }
        }
    }
}

程序运行界面：

• 三人合作步骤

        1. 先对题目做一个大概的分析，明确需要做什么，并在第二次作业基础上进行交流。

        2. 通过书籍、互联网、请教老师搜集相关资料。

        3. 重新写了代码，并进行规范以及相应的修改。

        4. 对函数进行模块化，将函数进行了封装。

        5. 进行代码反复检查。

        6. 进行相应的测试，检查系统是否符合设计要求。

• 总结

通过第二次作业和第三次作业的演练，我组三位成员都明白了合作和明确分工是完成任务的关键，充分的认

识到各自的优点和不足，在以后的学习中，取长补短，更好的完成下一次作业，我们得编程思想和编程能力

得到了锻炼和提升！

• psp耗时统计

       

步骤	耗时	百分比
理解题目要求和查找资料	2	4.44
需求分析	5	11.12
具体设计	3	6.67
代码规范和函数封装	3	6.67
代码复审	15	33.33
测试	15	33.33
总结	2	4.44