201421123016郑怀勇 201421123017康建灿
一、需求分析
- 记录用户的对错总数。
- 程序退出再启动的时候，能把以前的对错数量保存并在此基础上增量计算。
- 有计时功能，能显示用户开始答题后的消耗时间。
- 具有GUI界面
二、功能设计
三、代码展示：
读取记录：
boolean has = false;
int t=0,f=0;
File file = new File("D:/text.txt");
String line =null;
try {
BufferedReader br = new BufferedReader(new FileReader(file));
try {
while((line = br.readLine()) != null){
String[] num = line.split("#");
f=Integer.parseInt(num[1]);
t=Integer.parseInt(num[3]);
}} catch (IOException ex) {
}
}catch (Exception e) {
e.printStackTrace();
}
if(!has)
tagLabel1.setText("无记录");
文件数据保存：
public class pro {
int t = 0, f = 0;
void file(int d, int count) {
File file = new File("D:/text.txt");
String line = null;
try {
BufferedReader br = new BufferedReader(new FileReader(file));
try {
while ((line = br.readLine()) != null) {
String[] num = line.split("#");
t = Integer.parseInt(num[1]);
f = Integer.parseInt(num[3]);
}
} catch (IOException ex) {
}
} catch (FileNotFoundException ex) {
get(d, count);
}
get(d, count);
}
public void get(int d, int count) {
FileOutputStream fop = null;
File file;
String content = "错误#" + (d + t) + "#正确#" + (count + f) + "#";
try {
file = new File("D:/text.txt");
fop = new FileOutputStream(file);
if (!file.exists()) {
file.createNewFile();
}
byte[] contentInBytes = content.getBytes();
fop.write(contentInBytes);
fop.flush();
fop.close();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (fop != null) {
fop.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
随机生成四则运算及正确答案：
int a[][]=null;
a=new int [1000][3];
String[] b=null;
b=new String [1000];
String stil[]=null;
stil=new String[1000];
int i = 0; for(;i<m;i++){
int h=(int)(0+Math.random()*(1-0+1));
if(h==1){
Zhengshu(i,b,c);
}
else
{
Fenshu(i,b,a,c);
}
answerEdit[i] = new JTextField();
panel.add(new JLabel(b[i]));
panel.add(answerEdit[i]);
} ``` public static String Fenshu(int i, String b[], int a[][], String c[]) {
int x = (int) (0 + Math.random() * (9 - 0 + 1));
int y = (int) (0 + Math.random() * (9 - 0 + 1));
while (x >= y || y == 0 || x == 0) {
x = (int) (0 + Math.random() * (9 - 0 + 1));
y = (int) (0 + Math.random() * (9 - 0 + 1));
}
int k = (int) (0 + Math.random() * (9 - 0 + 1));
int t = (int) (0 + Math.random() * (9 - 0 + 1));
while (k >= t || t == 0 || k == 0) {
k = (int) (0 + Math.random() * (9 - 0 + 1));
t = (int) (0 + Math.random() * (9 - 0 + 1));
}
int o = (int) (0 + Math.random() * (3 - 0 + 1));
if (o == 0) {
b[i] = "(" + x + "/" + y + ")+(" + k + "/" + t + ")=";
a[i][0] = x * t + k * y;
a[i][1] = y * t;
int n = divisor(a[i][0], a[i][1]);
c[i] = a[i][0] / n + "/" + a[i][1] / n;
}
if (o == 1) {
b[i] = "(" + x + "/" + y + ")-(" + k + "/" + t + ")=";
a[i][0] = x * t - k * y;
a[i][1] = y * t;
int n = divisor(a[i][0], a[i][1]);
c[i] = a[i][0] / n + "/" + a[i][1] / n;
}
if (o == 2) {
b[i] = "(" + x + "/" + y + ")*(" + k + "/" + t + ")=";
a[i][0] = x * k;
a[i][1] = y * t;
int n = divisor(a[i][0], a[i][1]);
c[i] = a[i][0] / n + "/" + a[i][1] / n;
}
if (o == 3) {
b[i] = "(" + x + "/" + y + ")÷(" + k + "/" + t + ")=";
a[i][0] = x * t;
a[i][1] = k * y;
int n = divisor(a[i][0], a[i][1]);
c[i] = a[i][0] / n + "/" + a[i][1] / n;
}
return b[i] + c[i];
}; public static String Zhengshu(int i, String b[], String c[]) {
int x = (int) (0 + Math.random() * (100 - 0 + 1));
int y = (int) (0 + Math.random() * (100 - 0 + 1));
int z = (int) (0 + Math.random() * (3 - 0 + 1));
if (z == 0) {
b[i] = x + "+" + y + "=";
c[i] = x + y + "";
}
if (z == 1) {
b[i] = x + "-" + y + "=";
c[i] = x - y + "";
}
if (z == 2) {
b[i] = x + "*" + y + "=";
c[i] = x * y + "";
}
if (z == 3) {
b[i] = x + "÷" + y + "=";
int n = divisor(x, y);
c[i] = x / n + "/" + y / n;
}
return b[i] + c[i];
} public static int divisor(int i, int j)// 最大公约数
{
int k = 1, s;
for (s = 1; s <= i && s <= j; s++) {
if (i % s == 0 && j % s == 0)
k = s;
}
return k; }
计时器：
JLabel timeText = new JLabel();
now.setHours(0);
now.setMinutes(0);
now.setSeconds(0);
final Timer timer = new Timer(1000, new ActionListener() {
public void actionPerformed(ActionEvent e) {
Date now2 = new Date(now.getTime() + 1000);
now = now2;
SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
timeText.setText(formatter.format(now));
}
});
timer.start();
timeText.setText("用时 :" + timeText.getText());
// timeText.setText("time");
commitBtn = new JButton("确定");
commitBtn.addActionListener(this);
commitBtn.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
timer.stop();
```
}
显示结果：
public result(int m2, int count2,double g2,String time2) {
// TODO Auto-generated constructor stub
this.setBounds(500, 250, 450, 200);
this.setResizable(true);
this.m=m2;
this.count=count2;
this.g=g2;
this.time=time2;
this.setTitle("四则运算");
jg();
}
private void jg(){
JPanel mainPanel = new JPanel();
mainPanel.setLayout(new BorderLayout(5,5));
JPanel panel = new JPanel();
panel.setLayout(new GridLayout(2,2));
panel.add(new JLabel("本次共出"+m+"题,答对"+count+"题，正确率为："+g+",用时 :"+time));
JPanel panel2 = new JPanel();
mainPanel.add("Center",panel);
mainPanel.add("South",panel2);
add(mainPanel);
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
}
}
四、测试运行截图：
主界面：
生成四则运算：
结果：
存储于文本：
五、PSP
| PSP2.1 | Personal Software Process Stages | Estimated time（h） | actual time（h） |
| Planning | 计划 | 1 | 1.5 |
| · Estimate | 估计这个任务需要多少时间 | 24 | 40 |
| Development | 开发 | 24 | 34 |
| · Analysis | 需求分析 (包括学习新技术) | 1 | 1.2 |
| · Design Spec | 生成设计文档 | 7 | 10 |
| · Design Review | 设计复审 | 0.5 | 0.5 |
| · Coding Standard | 代码规范 | 0.5 | 0.8 |
| · Design | 具体设计 | 1.5 | 1.5 |
| · Coding | 具体编码 | 20 | 30 |
| · Code Review | 代码复审 | 10 | 15 |
| · Test | 测试（自我测试，修改代码，提交修改） | 1 | 3 |
| Reporting | 报告 | 20 | 25 |
| · | 测试报告 | 1 | 1.5 |
| · | 计算工作量 | 0.5 | 1 |
| · | 并提出过程改进计划 | 2 | 4 |
六、总结
此次与康建灿一起完成结队作业，先对功能进行分析，最后选取了存储功能以及计时器功能，并以康建灿的代码作为基础代码进行扩展延伸。由于2个人的编程能力都不是很强，过程中一直磕磕碰碰，有很多不懂，尤其是在图形界面方面，可以说2个人都很薄弱，一直在巩固以前学习的Java知识。
而结队无疑提高了我们的效率，俗话说三个臭皮匠顶个诸葛亮，在编程过程中，能够达到互相监督，互相学习的效果。正所谓旁观者清，当其中一个人在编程，另一个人就能在旁边更直观地发现错误。
汉堡包点评：
先来一片面包：我们有着共同的目标，都想写好一个代码，能给对方予以依靠；
再把肉放上：就算2个人的编程能力都不是很好，但也不能自暴自弃，更不能嫌弃对方，而是应该互相鼓励，强调我们可以做到更好；
然后再来一片面包：最后，思路与方向都清晰了，这时，更应该互相激励，努力做到更好。
七，综上，附上合照一张
