{"id":10642,"date":"2024-03-14T12:28:57","date_gmt":"2024-03-14T12:28:57","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-is-linkedhashmap-used-in-java\/"},"modified":"2025-08-04T02:04:33","modified_gmt":"2025-08-04T02:04:33","slug":"how-is-linkedhashmap-used-in-java","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-is-linkedhashmap-used-in-java\/","title":{"rendered":"Java LinkedHashMap Guide: Uses &#038; Examples"},"content":{"rendered":"<p>LinkedHashMap is a subclass of HashMap that maintains a doubly linked list internally to keep track of the order in which elements are inserted or accessed (sorting based on the order specified in the constructor parameter).<\/p>\n<p>LinkedHashMap has the capability to maintain the order of elements as they are inserted or accessed, making it very useful in certain scenarios such as the LRU caching algorithm, which typically utilizes LinkedHashMap for implementation.<\/p>\n<p>Commonly used methods of LinkedHashMap include put, get, remove, which are similar to HashMap, but can maintain the order of elements. LinkedHashMap also provides additional methods such as entrySet, keySet, values, that are used to retrieve elements in LinkedHashMap.<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> java.util.LinkedHashMap;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">TestLinkedHashMap<\/span> {\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> {\r\n        LinkedHashMap&lt;String, Integer&gt; linkedHashMap = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">LinkedHashMap<\/span>&lt;&gt;();\r\n\r\n        linkedHashMap.put(<span class=\"hljs-string\">\"apple\"<\/span>, <span class=\"hljs-number\">1<\/span>);\r\n        linkedHashMap.put(<span class=\"hljs-string\">\"banana\"<\/span>, <span class=\"hljs-number\">2<\/span>);\r\n        linkedHashMap.put(<span class=\"hljs-string\">\"orange\"<\/span>, <span class=\"hljs-number\">3<\/span>);\r\n\r\n        <span class=\"hljs-keyword\">for<\/span> (String key : linkedHashMap.keySet()) {\r\n            System.out.println(key + <span class=\"hljs-string\">\" : \"<\/span> + linkedHashMap.get(key));\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>The above code demonstrates the basic usage of LinkedHashMap, storing elements in the order they were inserted and preserving this order during traversal.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>LinkedHashMap is a subclass of HashMap that maintains a doubly linked list internally to keep track of the order in which elements are inserted or accessed (sorting based on the order specified in the constructor parameter). LinkedHashMap has the capability to maintain the order of elements as they are inserted or accessed, making it very [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[576,578,7684,5529,13391],"class_list":["post-10642","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-hashmap","tag-java-collections","tag-java-data-structures","tag-linkedhashmap","tag-lru-cache"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java LinkedHashMap Guide: Uses &amp; Examples - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how LinkedHashMap works in Java, its LRU cache implementation, and key methods with practical examples.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-is-linkedhashmap-used-in-java\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java LinkedHashMap Guide: Uses &amp; 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