werid output for For loop

[S Shehab]

Hi all
I'm facing a weird problem with for loop , here is my code

private void Sync()
{    

System.out.println("vOrgTableTotal size  " + vOrgTableTotal.size());//this vector size is 13
System.out.println("vBckTableTotal size " + vBckTableTotal.size());//this vector size is 13

 
Sherif:for (int i=0;i<vOrgTableTotal.size();i++)// this for the outer vector
{
System.err.println(" I " + i);

System.err.println("OUTER");


for (int x=0;x<vOrgTableTotal.get(i).size();x++)//this get me the size of the inner vector = 28
{

System.out.println(" X " + x);
System.out.println("INNER");


}


}

System.out.println(" done");
 
}

this is the output

 X 0 // here why it didnt begin with i ??
INNER
 X 1
INNER
 X 2
INNER I 0 // i here was found !!
OUTER
 I 1 //suppose m to be  incremented  till it reaches 27 then increment i !!
OUTER
 
 X 3
INNER
 X 4
INNER
 X 5
INNER
 X 6
INNER
 X 7
INNER
 X 8
INNER
 X 9
INNER
 X 10
INNER
 X 11
INNER
 X 12
INNER
 X 13
INNER
 X 14
INNER
 X 15
INNER
 X 16
INNER
 X 17
INNER
 X 18
INNER
 X 19
INNER
 X 20
INNER
 X 21
INNER
 X 22
INNER
 X 23
INNER
 X 24
INNER
 X 25
INNER
 X 26
INNER
 X 27
INNER
 X 0 // why i wasn't incremented here ??
INNER
 X 1
INNER
 X 2
INNER
 X 3
INNER
 X 4
INNER
 X 5
INNER
 X 6
INNER
 X 7
INNER
 X 8
INNER
 X 9
INNER
 X 10
INNER
 X 11
INNER
 X 12
INNER
 X 13
INNER
 X 14
INNER
 X 15
INNER
 X 16
INNER
 X 17
INNER
 X 18
INNER I 2 // why i was incremented here and m didnt reach 28 ??
 
 X 19
INNER
 X 20
INNER
 X 21
INNER
 X 22
INNER
 X 23
INNER
 X 24
INNER
 X 25
INNER
 X 26
INNER
 X 27
INNER
 X 0
INNER
 X 1
INNER
OUTER
 X 2
INNER
 X 3
INNER
 X 4
INNER
 X 5
INNER
 X 6
 I 3INNER // why i was incremented in the middle of m for loop ?
 X 7
INNER
 X 8
INNER
 X 9
INNER
 X 10
INNER
 X 11
INNER
 X 12
INNER
 X 13
INNER
 X 14
INNER
 X 15
INNER
 X 16
INNER
 X 17
INNER
 X 18
INNER
 X 19
INNER
 X 20
INNER
 X 21
INNER
 X 22
INNER
 X 23
INNER
 X 24
INNER
 X 25
INNER
 X 26
INNER
 X 27
INNER
 X 0
INNER
 X 1
INNER
 X 2
INNER
 X 3
INNER
 X 4
INNER
 X 5
INNER
 X 6
INNER
 X 7
INNER
 X 8
INNER
 X 9
INNER
 X 10
INNER
 X 11
 
OUTER
INNER
 X 12
INNER
 X 13
INNER
 X 14
INNER
 X 15
INNER
 X 16
INNER
 X 17
INNER
 X 18
INNER
 X 19
INNER
 X 20
INNER
 X 21
INNER
 X 22
INNER
 X 23
INNER
 X 24
INNER
 X 25
INNER
 X 26
INNER
 X 27
INNER
 X 0
INNER
 I 4
OUTER
 X 1
INNER
 X 2
INNER
 X 3
INNER
 X 4
INNER
 X 5
INNER
 X 6
INNER
 X 7
INNER
 X 8
INNER
 X 9
INNER
 X 10
INNER
 X 11
INNER
 X 12
INNER
 X 13
INNER
 X 14
INNER
 X 15
INNER
 X 16
INNER
 X 17
INNER
 X 18
INNER
 X 19
INNER
 X 20
INNER
 X 21
INNER
 X 22
INNER
 X 23
INNER
 X 24
INNER
 X 25
INNER
 X 26
INNER
 X 27
 I 5
OUTER
INNER
 X 0
INNER
 X 1
INNER
 X 2
INNER
 X 3
INNER
 X 4
INNER
 X 5
INNER
 X 6
INNER
 X 7
INNER
 X 8
INNER
 X 9
INNER
 X 10
INNER
 X 11
INNER
 X 12
INNER
 X 13
INNER
 X 14
INNER
 X 15
INNER
 X 16
INNER
 X 17
INNER
 X 18
INNER
 X 19
INNER
 X 20
INNER
 X 21
INNER
 X 22
INNER
 X 23
INNER
 X 24
INNER
 X 25
INNER
 X 26
INNER
 X 27
INNER
 X 0
INNER
 X 1
INNER
 X 2
INNER
 X 3
INNER
 X 4
INNER
 X 5
INNER
 I 6
OUTER
 X 6
INNER
 X 7 I 7
OUTER
 
INNER
 X 8
INNER
 X 9
INNER
 X 10
INNER
 X 11
INNER
 X 12
INNER
 X 13
INNER
 X 14
INNER
 X 15
INNER
 X 16
INNER
 X 17
INNER
 X 18
INNER
 X 19
INNER
 X 20
INNER
 X 21
INNER
 X 22
INNER
 X 23
INNER
 X 24
INNER
 X 25
INNER
 X 26
INNER
 X 27
INNER
 X 0
INNER
 X 1
INNER
 X 2
INNER
 X 3
INNER
 X 4
INNER
 X 5
INNER
 X 6
INNER
 X 7
INNER
 X 8
INNER
 X 9
INNER
 X 10
INNER
 X 11
INNER
 X 12
INNER
 X 13
INNER
 X 14
INNER
 X 15
INNER
 X 16
INNER
 X 17
INNER
 X 18
INNER
 X 19
INNER
 X 20
INNER
 X 21
INNER
 X 22
INNER
 X 23
 I 8
OUTER
INNER
 X 24
INNER
 X 25
INNER
 X 26
INNER
 X 27
INNER
 X 0
INNER
 X 1
INNER
 X 2
INNER
 X 3
INNER
 X 4
INNER
 X 5
INNER
 X 6
INNER
 X 7
INNER
 X 8
INNER
 X 9
INNER
 X 10
INNER
 X 11
INNER
 X 12
INNER
 X 13
INNER
 X 14
INNER
 X 15
INNER
 X 16
INNER
 X 17
INNER
 X 18
INNER
 X 19
INNER
 X 20
INNER
 X 21
INNER
 X 22 I 9
OUTER
 I 10
OUTER
 
INNER
 X 23
INNER
 X 24
INNER
 X 25
INNER
 X 26
INNER
 X 27
INNER
 X 0
INNER
 X 1
INNER
 X 2
INNER
 X 3
INNER
 X 4
INNER
 X 5
INNER
 X 6
INNER
 X 7
INNER
 X 8
INNER
 X 9
INNER
 X 10
INNER
 X 11
INNER
 X 12
INNER
 X 13
INNER
 X 14
INNER
 X 15
INNER
 X 16
INNER
 X 17
INNER
 X 18
INNER
 X 19
INNER
 X 20
INNER
 X 21
INNER
 X 22
INNER
 X 23
INNER
 X 24
INNER
 X 25
INNER
 X 26
INNER
 X 27
INNER
 X 0
INNER
 X 1
INNER
 X 2
INNER
 X 3
INNER
 X 4
INNER
 X 5
INNER
 X 6
INNER
 X 7
INNER
 X 8
INNER
 X 9
INNER
 X 10
INNER
 X 11
INNER
 X 12
INNER
 X 13
INNER
 X 14
INNER
 X 15
INNER
 X 16
INNER
 X 17
INNER
 X 18
INNER
 X 19
INNER
 X 20
INNER
 X 21
INNER
 X 22
INNER
 X 23
INNER
 X 24
INNER
 X 25
INNER
 X 26
INNER
 X 27
INNER
 I 11
OUTER
 X 0
INNER
 X 1
INNER
 X 2
INNER
 X 3
INNER
 X 4
INNER
 X 5
INNER
 X 6
INNER
 X 7
INNER
 X 8
INNER
 X 9
INNER
 X 10
INNER
 X 11
INNER
 X 12
INNER
 X 13
INNER
 X 14
INNER
 X 15
INNER
 X 16
INNER
 X 17
INNER
 X 18
INNER
 X 19
INNER
 X 20
INNER
 X 21
INNER
 X 22
INNER
 X 23
INNER
 X 24
INNER
 X 25
INNER
 X 26
INNER
 X 27
INNER
 I 12
OUTER
 X 0
INNER
 X 1
INNER
 X 2
INNER
 X 3
INNER
 X 4
INNER
 X 5
INNER
 X 6
INNER
 X 7
INNER
 X 8
INNER
 X 9
INNER
 X 10
INNER
 X 11
INNER
 X 12
INNER
 X 13
INNER
 X 14
INNER
 X 15
INNER
 X 16
INNER
 X 17
INNER
 X 18
INNER
 X 19
INNER
 X 20
INNER
 X 21
INNER
 X 22
INNER
 X 23
INNER
 X 24
INNER
 X 25
INNER
 X 26
INNER
 X 27
INNER   

you will find my questions as comments in the code and the output . what i wanna do is when i = 0 it goes to the inner for loop till x reaches 28 then increment i by ...etc till i reaches 13 ..

Any thing i was missing ?

Happy new year to all

[Darryl Burke]

You're printing to two different print streams that aren't synchronized -- System.err and System.out. Why?

[S Shehab]

Originally posted by Darryl Burke:
You're printing to two different print streams that aren't synchronized -- System.err and System.out. Why?

Opps, what a silly stuff i missed , may be i need to rest i'm working for 13 hours till now , ya i just made all System.out and working fine now

[S Shehab]

Originally posted by Darryl Burke:
You're printing to two different print streams that aren't synchronized -- System.err and System.out. Why?

why when i'm printing this

 if (vBckTableTotal.get(i).get(x).equalsIgnoreCase((vOrgTableTotal.get(i).get(x))))   

inside the inner loop

 for (int x = 0; x < vOrgTableTotal.get(i).size(); x++)   

giving me this exception

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 0    

[Martijn Verburg]

Because there is no element at position x for that list. I'd also split out your code a little so that you can clearly see when you are accessing what.

[Steve Luke]

Originally posted by Sherif Shehab:


why when i'm printing this

 if (vBckTableTotal.get(i).get(x).equalsIgnoreCase((vOrgTableTotal.get(i).get(x))))   

inside the inner loop

 for (int x = 0; x < vOrgTableTotal.get(i).size(); x++)   

giving me this exception

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 0    

Because either the inner or outer vector used in vBckTableTotal is empty, and so doesn't have an index 0.