The difference between a built-in array and an ArrayList in Java, is that the size of an array cannot be modified (if you want to add or remove elements to/from an array, you have to create a new one).

Jul 11, 2025 · Below are the various methods to initialize an ArrayList in Java. 1. Initialization with add () Syntax: Example 1: This example demonstrates how to create an ArrayList using the add () method. …

Resizable-array implementation of the List interface. Implements all optional list operations, and permits all elements, including null. In addition to implementing the List interface, this class provides methods …

Dec 14, 2024 · In this quick article, we had a look at the ArrayList in Java. We showed how to create an ArrayList instance, and how to add, find, or remove elements using different approaches.

The ArrayList class is used to implement resizable-arrays in Java. In this tutorial, we will learn about the ArrayList class and its methods with the help of examples.

Nov 27, 2025 · In Java, ArrayList is a dynamic array implementation from the java.util package, allowing resizable storage of elements. While ArrayList is commonly used with built-in data types (e.g., String, …

Jun 17, 2009 · Arrays.asList(...) will give you a List * backed by the passed in arguments array, so it cannot change length.

Feb 3, 2026 · Explanation: This program creates an ArrayList of integers, adds elements to it using the add () method, and stores them dynamically. Finally, it prints the elements in insertion order as [1, 2, 3].

Apr 1, 2025 · This Tutorial Explains How to Declare, Initialize & Print Java ArrayList with Code Examples. You will also Learn about Implementation of ArrayList in Java.

Aug 4, 2023 · In this tutorial, we will learn to initialize ArrayList based on some frequently seen usecases.