作业 5.1

　　队友：吴哲永

　　博客地址：http://www.cnblogs.com/dbssb/

　　初步实现第一阶段目标。

主类：

 1 package 四则运算;
 2 
 3 public class Test {
 4 
 5     public static void main(String[] args) {
 6         
 7         MyFrame a=new MyFrame();
 8 
 9     }
10 
11 }

窗体类：

  1 package 四则运算;
  2 
  3 import java.*;
  4 import java.util.*;
  5 
  6 import javax.swing.*;
  7 
  8 import java.awt.*;
  9 import java.awt.event.*;
 10 import java.io.*;
 11 
 12 public class MyFrame extends JFrame
 13 {
 14     JLabel L1=new JLabel("请输入题数（最多不超过5题）：");
 15     JLabel L2=new JLabel("第一题：");
 16     JLabel L3=new JLabel("   =   ");
 17     JLabel L4=new JLabel("第二题：");
 18     JLabel L5=new JLabel("   =   ");
 19     JLabel L6=new JLabel("第三题：");
 20     JLabel L7=new JLabel("   =   ");
 21     JLabel L8=new JLabel("第四题：");
 22     JLabel L9=new JLabel("   =   ");
 23     JLabel L10=new JLabel("第五题：");
 24     JLabel L11=new JLabel("   =   ");
 25     JLabel L12=new JLabel("欢迎您，尊敬的 ");
 26     JLabel L13=new JLabel("用户");
 27     JLabel L14=new JLabel("");
 28     JLabel L15=new JLabel("           ");
 29     JLabel L16=new JLabel("   ");
 30     JLabel L17=new JLabel("   ");
 31     JLabel L18=new JLabel("");
 32     JLabel L19=new JLabel("                               ");
 33     JTextField[]T={
 34             new JTextField(10),new JTextField(10),new JTextField(10),new JTextField(10),new JTextField(10),new JTextField(10),new JTextField(10),new JTextField(10),new JTextField(10),new JTextField(10),new JTextField(5)
 35         };
 36     JButton B1=new JButton("开始答题");
 37     JButton B2=new JButton("提交");
 38     
 39     JFrame f=new JFrame();
 40     
 41     String username=new String();
 42     int i;
 43     int k;
 44     int n;
 45     long begintime;
 46     long endtime;
 47     long time;
 48     int[]a=new int[5];
 49     int[]b=new int[5];
 50     int[]c=new int[5];
 51     int[]d=new int[5];
 52     int[]answer=new int[5];
 53     
 54     
 55     public MyFrame() 
 56     {
 57         getContentPane().setBackground(Color.WHITE);
 58         this.setVisible(true);
 59         this.setTitle("四则运算答题");
 60         Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
 61         setBounds((d.width - 502) / 2, (d.height - 450) / 2, 502, 450);
 62         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 63         this.setResizable(false);
 64         getContentPane().setLayout(new FlowLayout(FlowLayout.CENTER, 12, 10));
 65         L12.setForeground(Color.RED);
 66         L12.setFont(new Font("宋体", Font.BOLD, 25));
 67         getContentPane().add(L12);
 68         L13.setForeground(SystemColor.textHighlight);
 69         L13.setFont(new Font("宋体", Font.BOLD, 25));
 70         getContentPane().add(L13);
 71         L1.setFont(new Font("宋体", Font.PLAIN, 20));
 72         getContentPane().add(L1);
 73         T[10].setFont(new Font("宋体", Font.PLAIN, 20));
 74         getContentPane().add(T[10]);
 75         B1.setFont(new Font("宋体", Font.PLAIN, 20));
 76         getContentPane().add(B1);
 77         L2.setFont(new Font("宋体", Font.PLAIN, 20));
 78         getContentPane().add(L2);
 79         T[0].setFont(new Font("宋体", Font.PLAIN, 20));
 80         getContentPane().add(T[0]);
 81         L3.setFont(new Font("宋体", Font.PLAIN, 20));
 82         getContentPane().add(L3);
 83         T[5].setFont(new Font("宋体", Font.PLAIN, 20));
 84         getContentPane().add(T[5]);
 85         L4.setFont(new Font("宋体", Font.PLAIN, 20));
 86         getContentPane().add(L4);
 87         T[1].setFont(new Font("宋体", Font.PLAIN, 20));
 88         getContentPane().add(T[1]);
 89         L5.setFont(new Font("宋体", Font.PLAIN, 20));
 90         getContentPane().add(L5);
 91         T[6].setFont(new Font("宋体", Font.PLAIN, 20));
 92         getContentPane().add(T[6]);
 93         L6.setFont(new Font("宋体", Font.PLAIN, 20));
 94         getContentPane().add(L6);
 95         T[2].setFont(new Font("宋体", Font.PLAIN, 20));
 96         getContentPane().add(T[2]);
 97         L7.setFont(new Font("宋体", Font.PLAIN, 20));
 98         getContentPane().add(L7);
 99         T[7].setFont(new Font("宋体", Font.PLAIN, 20));
100         getContentPane().add(T[7]);
101         L8.setFont(new Font("宋体", Font.PLAIN, 20));
102         getContentPane().add(L8);
103         T[3].setFont(new Font("宋体", Font.PLAIN, 20));
104         getContentPane().add(T[3]);
105         L9.setFont(new Font("宋体", Font.PLAIN, 20));
106         getContentPane().add(L9);
107         T[8].setFont(new Font("宋体", Font.PLAIN, 20));
108         getContentPane().add(T[8]);
109         L10.setFont(new Font("宋体", Font.PLAIN, 20));
110         getContentPane().add(L10);
111         T[4].setFont(new Font("宋体", Font.PLAIN, 20));
112         getContentPane().add(T[4]);
113         L11.setFont(new Font("宋体", Font.PLAIN, 20));
114         getContentPane().add(L11);
115         T[9].setFont(new Font("宋体", Font.PLAIN, 20));
116         getContentPane().add(T[9]);
117         L14.setFont(new Font("宋体", Font.PLAIN, 20));
118         getContentPane().add(L14);
119         L19.setFont(new Font("宋体", Font.PLAIN, 20));
120         getContentPane().add(L19);
121         B2.setFont(new Font("宋体", Font.PLAIN, 20));
122         getContentPane().add(B2);
123         L15.setFont(new Font("宋体", Font.PLAIN, 20));
124         getContentPane().add(L15);
125         L16.setFont(new Font("宋体", Font.PLAIN, 20));
126         getContentPane().add(L16);
127         L14.setFont(new Font("宋体", Font.PLAIN, 20));
128         getContentPane().add(L14);
129         L17.setFont(new Font("宋体", Font.PLAIN, 20));
130         getContentPane().add(L17);
131         L18.setFont(new Font("宋体", Font.PLAIN, 20));
132         getContentPane().add(L18);
133         
134         File file=new File("用户名.txt");
135         if(!file.exists())
136         {
137             try
138              {
139                 file.createNewFile();
140             }
141             catch (IOException e)
142             {
143                 e.printStackTrace();
144             }
145             Inputname b=new Inputname();
146         }
147         else
148         {
149             String str1=new String("");; 
150             int i=0;
151             BufferedReader br = null;
152             try 
153             {
154                 br = new BufferedReader(new FileReader(file.getName()));
155             } 
156             catch (FileNotFoundException e1) 
157             {
158                 e1.printStackTrace();
159             }
160             try 
161             {
162                 while((str1=br.readLine())!=null)
163                 {
164                     username=str1;
165                 }
166             }
167             catch (IOException e)
168             {
169                 e.printStackTrace();
170             }
171             try 
172             {
173                 br.close();
174             } 
175             catch (IOException e) 
176             {
177                 e.printStackTrace();
178             }
179             if(username.length()==0)
180             {
181                 Inputname b=new Inputname();
182             }
183             else
184             {
185                 L13.setText(username);
186             }
187         }
188         
189         B1.addActionListener(new Action());
190         B2.addActionListener(new Action());
191     }
192     
193     public class Action implements ActionListener
194     {
195 
196         public void actionPerformed(ActionEvent e) 
197         {
198             try
199             {
200                 if(e.getSource()==B1)
201                 {
202                     for(k=0;k<10;k++)
203                     {
204                         T[k].setText(null);
205                     }
206                     L15.setText("           ");
207                     L16.setText(null);
208                     L17.setText(null);
209                     L18.setText("");
210                     i=0;
211                     
212                     if(T[10].getText().length()==0)
213                     {
214                         JOptionPane.showMessageDialog(f,"请输入题数！");
215                     }
216                     else if(Integer.parseInt(T[10].getText())>5)
217                     {
218                         JOptionPane.showMessageDialog(f,"题数最多不超过5！");
219                     }
220                     else
221                     {
222                         i=Integer.parseInt(T[10].getText());
223                         
224                         for(k=0;k<i;k++)
225                         {
226                             a[k]=(int)(Math.random()*100+1);
227                             b[k]=(int)(Math.random()*100+1);
228                             c[k]=(int)(Math.random()*5);
229                             d[k]=(int)(Math.random()*12+1);
230                             Core core=new Core(a[k],b[k],c[k],d[k]);
231                             answer[k]=core.calc();
232                             T[k].setText(core.toString());
233                             
234                         }
235                         begintime = System.currentTimeMillis();
236                     }
237                 }
238             }catch(NumberFormatException u)
239             {
240                 JOptionPane.showMessageDialog(f,"请输入正确的数字！");
241             }
242             if(e.getSource()==B2)
243             {
244                 if(i==0)
245                 {
246                     JOptionPane.showMessageDialog(f,"请先进行答题！");
247                 }
248                 else
249                 {
250                     endtime = System.currentTimeMillis();
251                     time=(endtime-begintime)/1000;
252                     n=0;
253                     for(k=0;k<i;k++)
254                     {
255                         if(T[k+5].getText().length()==0)
256                         {
257                             continue;
258                         }
259                         try
260                         {
261                             if(answer[k]==Integer.parseInt(T[k+5].getText()))
262                             {
263                                 n++;
264                             }
265                         }catch(NumberFormatException u)
266                         {
267                             JOptionPane.showMessageDialog(f,"请输入正确的数字！");
268                         }
269                         
270                     }
271                     L15.setText("你答对了："+n+"道题");
272                     L16.setText("你答错了："+(i-n)+"道题");
273                     L14.setText("用时："+time+"秒");
274                     L17.setText("参考答案：");
275                     for(k=0;k<i;k++)
276                     {
277                         L18.setText(L18.getText()+answer[k]+";");
278                     }
279                     i=0;
280                 }
281             }
282         }
283         
284         
285     }
286     
287     public class Inputname extends JFrame
288     {
289         JLabel L1=new JLabel("请输入您的用户名：");
290         JTextField T1=new JTextField(17);
291         JButton B1=new JButton("确定");
292         JButton B2=new JButton("关闭");
293         
294         JFrame f=new JFrame();
295         
296         public Inputname()
297         {
298             this.setVisible(true);
299             this.setTitle("输入用户名");
300             Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
301             setBounds((d.width - 241) / 2, (d.height - 138) / 2, 242, 146);
302             setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
303             this.setResizable(false);
304             getContentPane().setLayout(new FlowLayout(FlowLayout.CENTER, 20, 6));
305             L1.setFont(new Font("宋体", Font.PLAIN, 20));
306             getContentPane().add(L1);
307             T1.setFont(new Font("宋体", Font.PLAIN, 20));
308             getContentPane().add(T1);
309             B1.setFont(new Font("宋体", Font.PLAIN, 20));
310             getContentPane().add(B1);
311             B2.setFont(new Font("宋体", Font.PLAIN, 20));
312             getContentPane().add(B2);
313             B1.addActionListener(new action());
314             B2.addActionListener(new action());
315         }
316         
317         public class action implements ActionListener
318         {
319 
320             public void actionPerformed(ActionEvent e)
321             {
322                 if(e.getSource()==B2)
323                 {
324                     setVisible(false);
325                 }
326                 
327                 if(e.getSource()==B1)
328                 {
329                     if(T1.getText().length()==0)
330                     {
331                         JOptionPane.showMessageDialog(f,"用户名不能为空");
332                     }
333                     else
334                     {
335                         username=T1.getText();
336                         L13.setText(username);
337                         
338                         File file=new File("用户名.txt");
339                         try{
340                         BufferedWriter writer=new BufferedWriter(new FileWriter(file.getName()));
341                             writer.write(username);;
342                         writer.close();
343                         } catch(IOException g)
344                         {
345                             System.out.print(g);
346                         }
347                         
348                         setVisible(false);
349                     }
350                     
351                 }
352                 
353             }
354             
355         }
356 
357     }
358     
359 }

包含计算功能的核心类：

 1 package 四则运算;
 2 
 3 public class Core {
 4     int a;
 5     int b;
 6     int c;
 7     int d;
 8     public Core(int a,int b,int c,int d)
 9     {
10         this.a=a;
11         this.b=b;
12         this.c=c;
13         this.d=d;
14     }
15     public int calc()
16     {
17         if(c==0)
18         {
19             return a+b;
20         }
21         else if(c==1)
22         {
23             return a-b;
24         }
25         else if(c==2)
26         {
27             return a*b;
28         }
29         else if(c==3)
30         {
31             return a/b;
32         }
33         else
34         {
35             return jiecheng(d);
36         }
37     }
38     public String toString()
39     {
40         if(c==0)
41         {
42             return a+"+"+b;
43         }
44         else if(c==1)
45         {
46             return a+"-"+b;
47         }
48         else if(c==2)
49         {
50             return a+"*"+b;
51         }
52         else if(c==3)
53         {
54             return a+"/"+b;
55         }
56         else
57         {
58             return d+"!";
59         }
60     }
61 
62     public int jiecheng(int x)
63     {
64         if(x==0 || x==1)
65         {
66             return 1;
67         }
68         else
69         {
70             return x*jiecheng(x-1);
71         }
72     }
73 }