Question

Java
Which of the following statements is true? (2 Points)
For-each loops can only be used to iterate over array elements.
For-each loops can be used to iterate over all array elements in reverse order.
For-each loops cannot be rewritten as for loops.

Answer 1

The functionality of a for each loop is to iterate through an array completely.
```
int[] x = {1, 2, 3, 4, 5, 6, 7, 8, 9};
for(int i : x)
System.out.print(x + " ");
```
The above will print:
```
1 2 3 4 5 6 7 8 9
```
The loop automatically knows how many elements are in array x, and will iterate through each element of that array (starting at element 0, and moving up by 1 each iteration until the end). Within each iteration, the array's value at that particular iteration/element is passed onto the primitive datatype on the left of the colon; within the for each loop, you're free to do what you want with the values passed into the primitive data value.

Answer 2

For-each doesn't just work for arrays. I believe it works for all classes that implement `Iterable`.