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 }
