For and While loop choice.

/*
    Difference between 'for' and 'while'.
    We can transform everything between 'for' and 'while'.
    if the incremnet is just use for increase,we recommended 'for';
    but if we want to preserved the increment and use it after the loop,'while' is recommented.
*/
import kju.print.Print;
class ForWhile 
{
    public static void main(String[] args) 
    {
        /*
        'i' is created after 'for',so it was release after the close brace.
        */
        for(int i = 0; i < 3; i++) {
            Print.println("i = " + i);
        }
        /*
        i = 0
        i = 1
        i = 2
        */
        //Print.println("after the loop, i = " + i);    //compile error,i does not exist.
        
        Print.println("-----------");
        /*
        'j' is created before 'while',so it was preserved after the close brace.
        */
        int j = 0;
        while(j < 3){
            Print.println("j = " + j);
            j++;
        }
        /*
        j = 0
        j = 1
        j = 2
        */
        Print.println("after the loop, j = " + j);
        //after the loop, j = 3
    }
}