Question

I was optimizing an application and wanted to change my for loops to enhanced loops:

From:

for (int m = 1;m < MAX_BEREN;m++)
{           
    Wasberen[m] = new Wasbeer();       
    Wasberen[m].YYY = r.nextInt(SchermY - 28);
}

to:

for (Wasbeer a : Wasberen)
{
    if (a!=null)
    {
       a = new Wasbeer();
       a.YYY = r.nextInt(SchermY - 28);
    }
}

I get a NullPointerException, because it probably doesnt know how much ‘beren’ can be in
the array, but I’m not sure how to manage the same as the loop above (MAX_BEREN = 11).

Answer 1

If the array reference (‘Wasberen‘ in this case) in an enhanced for statement is null, then a NullPointerException will result when the statement is executed.