How does primitive array work with new for each loop in Java?

Question

I understand that new for each loop works with Iterable and arrays, but I don't know what goes behind the scenes when working with arrays.

Can anyone help me understand this? Thanks in advance.

int[] number = new int[10];

for(int i: number) {

}

Answer 1

The loop is equivalent to:

for(int j = 0; j < number.length; j++) {
  int i = number[j];
  ...
}

where j is an internally generated reference that does not conflict with normal user identifiers.