java嵌套循环语法描述

 1 /**
 2  * 
 3  * @author qsl
 4  *
 5  */
 6 public class ChengFaB {
 7     public static void main(String[] args) {
 8         DD();
 9     }
10 
11     public static void FF() {//for...for
12         for (int i = 1; i < 10; i++) {
13             for (int j = 1; j <= i; j++) {
14                 System.out.print(j + "*" + i + "=" + i * j + "    ");
15             }
16             System.out.println();
17         }
18     }

19     public static void FW() {//for...while
20         for (int i = 1; i < 10; i++) {
21             int j = 1;
22             while ( j <= i) {
23                 System.out.print(j + "*" + i + "=" + i * j + "    ");
24                 j++;
25             }
26             System.out.println();
27         }
28     }

29     public static void WW() {//while...while
30         int i = 1;
31         while ( i < 10 ) {
32             int j = 1;
33             while ( j <= i) {
34                 System.out.print(j + "*" + i + "=" + i * j + "    ");
35                 j++;
36             }
37             System.out.println();
38             i++;
39         }
40     }
41     
42     public static void DW() {//do...while while
43         int i = 1;
44         do{
45             int j = 1;
46             while ( j <= i) {
47                 System.out.print(j + "*" + i + "=" + i * j + "    ");
48                 j++;
49             }
50             System.out.println();
51             i++;
52         }while ( i < 10 ) ;
53     }

54     public static void DD() {//do...while  do...while
55         int i = 1;
56         do{
57             int j = 1;
58             do{
59                 System.out.print(j + "*" + i + "=" + i * j + "    ");
60                 j++;
61             }while ( j <= i) ;
62             System.out.println();
63             i++;
64         }while ( i < 10 ) ;
65     }
66 }