In this article, we will find the differences between ArrayList and LinkedList in Java. An Array is a collection of objects that contains values of a single data type. Each item in an array is called an element, and each element is accessed by its numerical index.
Introduction of ArrayList and LinkedList.
1. Array List
ArrayList is an element of the collection framework and delivers dynamic arrays in Java. It is present in the java.util package. It is slower than standard arrays. We can dynamically add and remove objects and It automatically resizes itself. It is very useful in programs where plenties of manipulation in the array are needed.
2. LinkedList
LinkedList is a linear data structure. The elements are linked using pointers and addresses. Each element is known as a node. In LinkedList elements are not stored in contiguous locations. Each component is a different item with a data part and address part. Because of the dynamicity and simplicity of additions and deletions, they are liked over the arrays.
Differences between ArrayList and LinkedList in Java
- ArrayList internally uses a dynamic array to store the elements.
- Manipulation with ArrayList is slow because it internally uses a dynamic array.
- An ArrayList acts as a list only because it implements List only.
- ArrayList is more rapid in storing and accessing data.
- The memory location is contiguous.
- LinkedList uses Doubly Linked List to store its elements.
- Manipulation with LinkedList is faster than ArrayList because it uses a doubly-linked list.
- LinkedList implements List and Queue.
- LinkedList is more rapid in manipulation of data.
- The memory is not contagious.