Which interface must a class implement to be used in a 'for-each' loop?IteratorIterableCollectionListIterator
Question
Which interface must a class implement to be used in a 'for-each' loop?IteratorIterableCollectionListIterator
Solution
A class must implement the Iterable interface to be used in a 'for-each' loop. The Iterable interface allows an object to be the target of the "for-each loop" statement. This interface must implement a method called iterator(), which returns an Iterator. The Iterator then allows you to go through all the elements of the object one by one.
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