BUILDING JAVA PROGRAMS-TEXT
BUILDING JAVA PROGRAMS-TEXT
5th Edition
ISBN: 2810023481209
Author: REGES
Publisher: PEARSON
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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 ...

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