Languages
[Edit]
EN

Java - how to use Iterator with ArrayList

0 points
Created by:
Violet-Hoffman
652

In this article, we would like to show you how to use iterator with ArrayList in Java.

Quick solution:

 

Introduction

Edit

Iterator is an object that can be used to loop through collections. In this article, we will focus on the ArrayList collection and loop through it.

Create iterator

Edit

To use Iterator, the first thing we need to do is obtain it from a Collection. To do so, we use iterator() method in the following way:

Iterator methods

Edit
  • hasNext() - checks if there is at least one element left to iterate over, it's commonly used as a condition in while loops.
  • next() - steps over the next element and obtains it.

Practical example

Edit

In this example, we create an iterator for letters ArrayList to display all the elements in the proper order.

Output:

1
Donate to Dirask
Our content is created by volunteers - like Wikipedia. If you think, the things we do are good, donate us. Thanks!
Join to our subscribers to be up to date with content, news and offers.

Java Collections - ArrayList

Native Advertising
🚀
Get your tech brand or product in front of software developers.
For more information Contact us
Dirask - we help you to
solve coding problems.
Ask question.

❤️💻 🙂

Join