The add() method adds an item to the list. If an index is provided then the new item will be placed at the specified index, pushing all of the following elements in the list ahead by one.

Jul 23, 2025 · Java ArrayList class uses a dynamic array for storing the elements. It is like an array, but there is no size limit. We can add or remove elements anytime. So, it is much more flexible than the …

As elements are added to an ArrayList, its capacity grows automatically. The details of the growth policy are not specified beyond the fact that adding an element has constant amortized time cost.

Suppose I have an ArrayList of objects of size n. Now I want to insert an another object at specific position, let's say at index position k (is greater than 0 and less than n) and I want other objects at …

Nov 12, 2025 · In Java, the `ArrayList` class is a part of the Java Collections Framework and is a resizable-array implementation of the `List` interface. One of the most frequently used operations on …

However, we can also add multiple elements from a collection (arraylist, set, map, etc) to an arraylist using the addAll() method. To learn more, visit Java ArrayList addAll ().

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.

Dec 10, 2024 · This method inserts the specified element at a given position in the ArrayList. It shifts the current element at that position and subsequent elements to the right.

Learn how to use the Java ArrayList add () method to insert elements at specified indices. Explore examples and key concepts to master ArrayList manipulation.

Learn how to insert single or multiple elements and retrieve them from ArrayLists in Java using add and get methods effectively.