can you please advise me why my first code attempt didn't work :

public void listAllFiles()
{
    for(String filename : files)
    {
        int position = 0;
        System.out.println(position + ": " + filename);
        position = position + 1;
    }
}

it kept printing position at 0 without iterating position

but it seems to work after i did it this way:

public void listAllFiles()
{
     int position = 0;
     for(String filename : files)
     {               
           System.out.println(position + ": " + filename);
           position = position + 1;
     }
 }

I don't understand why the position + 1 was not being executed, is it because we are not meant to define variables inside for loops or am i missing something in my code.