<aside> 💡 Architecture that allows us to manipulate a group of objects
</aside>
It's part of the 'java.lang' package and not 'java.util' like the rest of the class.
It represents iterable objects, meaning those that can be traversed by a loop, like an ArrayList. It defines a single method, 'iterator()', which is used to enable iteration of its objects. The primary use is to allow the 'for-each' loop.
Often, you won't need to implement it directly in your code, as the main classes of Collections already implement it for you.
for (int num : nums){
System.out.println(num);
}
Implemented by all of its frameworks subclasses. Used as a guide for what each subclass must have - standardisation.