编译器进行语法分析

首先编译器进行语法分析，也就是要把那些字符串分离出来。

然后进行语义分析，就是把各个由语法分析分析出的语法单元的意义搞清楚。

最后生成的是目标文件，也称为obj文件。

再经过链接器的链接就可以生成最后的EXE文件了。

有些时候需要把多个文件产生的目标文件进行链接，产生最后的代码。这一过程称为交叉链接。

 

  1 package Com.Table;
  2 import java.util.Scanner;
  3 public class EightTable {
  4     static String CaculateWeekDay(int y,int m,int d)
  5     {
  6         if(m==1)
  7         {
  8             m = 13;
  9             y--;
 10         }
 11         if(m==2)
 12         {
 13             m=14;
 14             y--;
 15         }
 16         int week=(d+2*m+3*(m+1)/5+y+y/4-y/100+y/400)%7;
 17         String weeks = null;
 18         switch(week)
 19         {
 20             case 0: weeks="Monday"; break;
 21             case 1: weeks="Tuesday"; break;
 22             case 2: weeks="Wednesday"; break;
 23             case 3: weeks="Thursday"; break;
 24             case 4: weeks="Friday"; break;
 25             case 5: weeks="Saturday "; break;
 26             case 6: weeks="Sunday"; break;
 27         }
 28         return weeks;
 29     }
 30  
 31     public static void main(String [] args)
 32     {
 33         int [][] day = new int[5][7];
 34         System.out.print("input year：");
 35         Scanner scanner = new Scanner(System.in);
 36         int Year = scanner.nextInt();
 37         System.out.print("input mounths：");
 38         int Mounth = scanner.nextInt();
 39  
 40         System.out.println("Sunday \t Monday \t Tuesday \t Wednesday \t Thursday \t Friday \t Saturday");
 41         int flag = 0;
 42         String Week = CaculateWeekDay(Year, Mounth, 1);
 43         if (Week.equals("Monday"))
 44         {
 45             day[0][1] = 1;
 46         }
 47         if (Week.equals("Tuesday"))
 48         {
 49             day[0][2] = 1;
 50         }
 51         if (Week.equals("Wednesday"))
 52         {
 53             day[0][3] = 1;
 54         }
 55         if (Week.equals("Thursday"))
 56         {
 57             day[0][4] = 1;
 58         }
 59         if (Week.equals("Friday"))
 60         {
 61             day[0][5] = 1;
 62         }
 63         if (Week.equals("Saturday"))
 64         {
 65             day[0][6] = 1;
 66             flag = 1;
 67         }
 68         if (Week.equals("Sunday"))
 69         {
 70             day[0][0] = 1;
 71         }
 72  
 73         if (Mounth == 1 ||
 74                 Mounth == 3 ||
 75                 Mounth == 5 ||
 76                 Mounth == 7 ||
 77                 Mounth == 8 ||
 78                 Mounth == 10 ||
 79                 Mounth == 12)
 80         {
 81             for (int i = 0; i < 5; i++)
 82             {
 83                 for (int j = 0; j < 7; j++)
 84                 {
 85                     if (day[i][j] == 1)
 86                     {
 87                         for (int m = 0; m < 31; m++)
 88                         {
 89                             System.out.print(day[i][j] + m + "\t\t");
 90                             if ((j + m + 1) % 7 == 0)
 91                             {
 92                                 System.out.println();
 93                             }
 94                         }
 95                     }
 96                     else
 97                     {
 98                         System.out.print("\t\t");
 99                     }
100                 }
101  
102             }
103         }
104         else if (Mounth == 4 ||
105                 Mounth == 6 ||
106                 Mounth == 9 ||
107                 Mounth == 11)
108         {
109             for (int i = 0; i < 5; i++)
110             {
111                 for (int j = 0; j < 7; j++)
112                 {
113                     if (day[i][j] == 1)
114                     {
115                         for (int m = 0; m < 30; m++)
116                         {
117                             System.out.print(day[i][j] + m + "\t\t");
118                             if ((j + m + 1) % 7 == 0)
119                             {
120                                 System.out.println();
121                             }
122                         }
123                     }
124                     else
125                     {
126                         System.out.print("\t\t");
127                     }
128                 }
129  
130             }
131         }
132         else
133         {
134             if ((Year % 4 == 0 || Year % 400 == 0) && Year % 100 != 0)
135             {
136                 for (int i = 0; i < 5; i++)
137                 {
138                     for (int j = 0; j < 7; j++)
139                     {
140                         if (day[i][j] == 1)
141                         {
142                             for (int m = 0; m < 29; m++)
143                             {
144                                 System.out.print(day[i][j] + m + "\t\t");
145                                 if ((j + m + 1) % 7 == 0)
146                                 {
147                                     System.out.println();
148                                 }
149                             }
150                         }
151                         else
152                         {
153                             System.out.print("\t\t");
154                         }
155                     }
156                 }
157             }
158             else
159             {
160                 for (int i = 0; i < 5; i++)
161                 {
162                     for (int j = 0; j < 7; j++)
163                     {
164                         if (day[i][j] == 1)
165                         {
166                             for (int m = 0; m < 28; m++)
167                             {
168                                 System.out.print(day[i][j] + m + "\t\t");
169                                 if ((j + m + 1) % 7 == 0)
170                                 {
171                                     System.out.println();
172                                 }
173                             }
174                         }
175                         else
176                         {
177                             System.out.print("\t\t");
178                         }
179                     }
180  
181                 }
182             }
183         }
184     }
185 }