How do you traverse through a collection using its Iterator?

Question

I understand what an iterator is, how do I implement the concept?

Answer 1

The following is the methodology to implement iterators in JAVA:

• Call the collection's iterator() method to get to the start of the Collection that you want to iterate upon. 
• Use a loop to iterate upon the collection while the hasNext() is true.
• To get to the next element of the iterator and change the iterator pointer, use the next() function. 

    

If you want to understand the proper hands-on method to implement an iterator with a real project, you should look up this topic online or watch a good java tutorial.