Chapter 15.3, Problem 15SCP

Explanation of Solution

Benefit of adding an iterator to a list class:

• Iterator is used to access data in the collections without relieving how data stored in the data structure.
• Iterator interface has the “iterator()” method, which returns iterator object. Iterator method is used for traversing data in an orderly fashioned manner.
• Data in the collections can be accessed using the following three methods,
  • next() – Accessing the next elements in the iterator.
  • hasNext() – To check more elements are available in the iterator.
  • remove() – To delete the last element returned by the iterator.

Example:

//Import the java package

import java.util.*;

public class Sample

{

  //Main method

  public static void main(String[] args)

  {

        //Creating new array list

Collection<String> collection = new ArrayList<>();

        //Adding new elements to the list

        collection.add( "Apple" );

        collection.add( "Orange" );

        collection ...