{"id":254,"date":"2025-06-24T07:53:19","date_gmt":"2025-06-24T07:53:19","guid":{"rendered":"https:\/\/thetestdata.com\/blog\/?p=254"},"modified":"2025-07-16T10:23:19","modified_gmt":"2025-07-16T10:23:19","slug":"difference-between-arraylist-and-linkedlist","status":"publish","type":"post","link":"https:\/\/thetestdata.com\/blog\/difference-between-arraylist-and-linkedlist\/","title":{"rendered":"Difference between ArrayList and LinkedList?"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">\ud83e\uddfe Key Differences Between <code>ArrayList<\/code> and <code>LinkedList<\/code><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Feature<\/th><th><code>ArrayList<\/code><\/th><th><code>LinkedList<\/code><\/th><\/tr><\/thead><tbody><tr><td><strong>Underlying Structure<\/strong><\/td><td>Dynamic array<\/td><td>Doubly linked list<\/td><\/tr><tr><td><strong>Access Time<\/strong><\/td><td>Fast for random access (<code>get(index)<\/code>)<\/td><td>Slower for random access (traverse nodes)<\/td><\/tr><tr><td><strong>Insertion\/Deletion<\/strong><\/td><td>Slower (elements shift on add\/remove)<\/td><td>Faster for add\/remove in middle or ends<\/td><\/tr><tr><td><strong>Memory Usage<\/strong><\/td><td>Less overhead<\/td><td>More memory (extra node pointers)<\/td><\/tr><tr><td><strong>Traversal Speed<\/strong><\/td><td>Faster (contiguous memory)<\/td><td>Slower (jumps between nodes)<\/td><\/tr><tr><td><strong>Best for<\/strong><\/td><td>Frequent reads\/access by index<\/td><td>Frequent inserts\/deletes (esp. at ends)<\/td><\/tr><tr><td><strong>Thread Safety<\/strong><\/td><td>Not synchronized<\/td><td>Not synchronized<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83e\uddea Quick Code Comparison<\/p>\n\n\n\n<p>import java.util.*;<\/p>\n\n\n\n<p>public class ListExample {<br>public static void main(String[] args) {<br>List arrayList = new ArrayList&lt;&gt;();<br>List linkedList = new LinkedList&lt;&gt;();<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>    arrayList.add(\"Apple\");\n    linkedList.add(\"Apple\");\n\n    arrayList.get(0);    \/\/ Fast\n    linkedList.get(0);   \/\/ Slower\n}<\/code><\/pre>\n\n\n\n<p>}<\/p>\n\n\n\n<p>\u2696\ufe0f In Simple Terms:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Use <code>ArrayList<\/code><\/strong> if you mostly read or access items using indexes.<\/li>\n\n\n\n<li><strong>Use <code>LinkedList<\/code><\/strong> if you often add\/remove items from the middle or ends.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Explore the difference between ArrayList and LinkedList in Java. Learn how each handles data storage, access speed, and manipulation efficiency<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-container-style":"default","site-container-layout":"default","site-sidebar-layout":"default","disable-article-header":"default","disable-site-header":"default","disable-site-footer":"default","disable-content-area-spacing":"default","footnotes":""},"categories":[17],"tags":[],"class_list":["post-254","post","type-post","status-publish","format-standard","hentry","category-java-interview-questions"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/posts\/254","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/comments?post=254"}],"version-history":[{"count":2,"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/posts\/254\/revisions"}],"predecessor-version":[{"id":445,"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/posts\/254\/revisions\/445"}],"wp:attachment":[{"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/media?parent=254"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/categories?post=254"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/thetestdata.com\/blog\/wp-json\/wp\/v2\/tags?post=254"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}