Jan 4, 2019 · In many cases, there is a need to create a two-dimensional ArrayList or a three-dimensional ArrayList. In this tutorial, we’ll discuss how to create a multidimensional ArrayList in Java.

Jul 11, 2025 · Geek but what if we want to make a multidimensional ArrayList, for this functionality for which we do have Multidimensional Collections (or Nested Collections) in Java.

Jun 6, 2013 · Do you want a 2D array of ArrayList (something like 3D, finally) or a 2D ArrayList (an ArrayList of ArrayList)? If you ask this for your homework, could you write the original question.

Nov 12, 2025 · For instance, representing a chessboard, a matrix, or a spreadsheet can be efficiently done using 2D `ArrayLists`. In this blog, we will delve into the fundamental concepts, usage methods, …

Apr 20, 2024 · Learn how to create 2D ArrayList in Java using various methods along with their syntax and code examples on Scaler Topics.

Learn how to effectively create and manage a 2D ArrayList in Java with this comprehensive guide, including examples and common pitfalls.

An Array List is a dynamic version of array and is supported in Java's collection library. In this article, we have focused on 2D array list in Java along with different methods applicable on it like indexOf.

Jul 12, 2025 · Given a 2D list, the task is to iterate this 2D list in Java. 2D list (list of lists) The 2D list refers to a list of lists, i.e. each row of the list is another list. [5, 10], [1], . [20, 30, 40] Iterate a 2D list: …

Dec 8, 2025 · This guide will walk you through everything you need to know about creating, initializing, and manipulating 2D ArrayLists in Java. We’ll cover common pitfalls, best practices, and practical …

The simplest and most flexible way which works for me is just using an almost "Plain and Old Java Object" class2D to create each "row" of your array. The below example has some explanations and …