Java Programming - Flow Control - Discussion
public class Delta
{
static boolean foo(char c)
{
System.out.print(c);
return true;
}
public static void main( String[] argv )
{
int i = 0;
for (foo('A'); foo('B') && (i < 2); foo('C'))
{
i++;
foo('D');
}
}
}
'A' is only printed once at the very start as it is in the initialisation section of the for loop. The loop will only initialise that once.
'B' is printed as it is part of the test carried out in order to run the loop.
'D' is printed as it is in the loop.
'C' is printed as it is in the increment section of the loop and will 'increment' only at the end of each loop. Here ends the first loop. Again 'B' is printed as part of the loop test.
'D' is printed as it is in the loop.
'C' is printed as it 'increments' at the end of each loop.
Again 'B' is printed as part of the loop test. At this point the test fails because the other part of the test (i < 2) is no longer true. i has been increased in value by 1 for each loop with the line: i++;
This results in a printout of ABDCBDCB
What about this line?
I think that it will be compilation problem!
and "public static void main( String[] argv )". Line is fully correct because,
1. int[]a;
2. int a[]; both array declaration is fine.
"Yatin Sharma" short circuit operator"&&"AND) not create any problem because foo()method every time return true that's why it will check the second condition.
And for loop can work fine with condition only ex:- for(;a&&b;).
No doubt.
We can write for loop as for (anything ;anything which will give boolean result ;anything).
But we have to initialize the for loop before execution of for loop and we can increment inside the loop.