1 /*
2 Difference between 'for' and 'while'.
3 We can transform everything between 'for' and 'while'.
4 if the incremnet is just use for increase,we recommended 'for';
5 but if we want to preserved the increment and use it after the loop,'while' is recommented.
6 */
7 import kju.print.Print;
8 class ForWhile
9 {
10 public static void main(String[] args)
11 {
12 /*
13 'i' is created after 'for',so it was release after the close brace.
14 */
15 for(int i = 0; i < 3; i++) {
16 Print.println("i = " + i);
17 }
18 /*
19 i = 0
20 i = 1
21 i = 2
22 */
23 //Print.println("after the loop, i = " + i); //compile error,i does not exist.
24
25 Print.println("-----------");
26 /*
27 'j' is created before 'while',so it was preserved after the close brace.
28 */
29 int j = 0;
30 while(j < 3){
31 Print.println("j = " + j);
32 j++;
33 }
34 /*
35 j = 0
36 j = 1
37 j = 2
38 */
39 Print.println("after the loop, j = " + j);
40 //after the loop, j = 3
41 }
42 }
