We can use Iterator design pattern to access the individual elements

of a Collection. In case of an ordered collection we can get Iterator

that returns the elements in an order.

In Java there are many implementation of Iterator in Collections

package. We have iterators like- Spliterator, ListIterator etc. that

implement Iterator pattern.

https://www.tutorialspoint.com/design_pattern/iterator_pattern.htm#:~:text=Iterator%20pattern%20is%20very%20commonly,to%20know%20its%20underlying%20representation.