public class ForLoopIndex
{
    public static void main(String[] args) 
    {
        int sum = 0;

        for ( int i = 0; i < 10; i++ )  // Line 1: defines var i
        {                               
            sum = sum + i;              
        }                               // Line 2

        //System.out.println(i);          // Illegal !
        System.out.println(sum);
    }
}