{"id":23974,"date":"2026-06-03T04:23:23","date_gmt":"2026-06-03T04:23:23","guid":{"rendered":"https:\/\/sharpinterview.online\/?sharp_quiz=java-interview-doubly-linked-list-usage"},"modified":"2026-06-03T04:23:23","modified_gmt":"2026-06-03T04:23:23","slug":"java-interview-doubly-linked-list-usage","status":"publish","type":"sharp_quiz","link":"https:\/\/sharpinterview.online\/?sharp_quiz=java-interview-doubly-linked-list-usage","title":{"rendered":"Java: When should a Java developer choose Doubly Linked Lists deliberately?"},"content":{"rendered":"<h2>Question<\/h2>\n<p>When should a Java developer choose Doubly Linked Lists deliberately?<\/p>\n<ol type=\"A\">\n<li>Choose Doubly Linked Lists mainly when you want to postpone validation and fix problems manually later.<\/li>\n<li>Use a doubly linked list for structures like LRU caches where nodes move between ends and removals happen from the middle.<\/li>\n<li>Choose Doubly Linked Lists whenever you want the code to look more advanced, even if the design gets less clear.<\/li>\n<li>Choose Doubly Linked Lists only to avoid modeling domain rules explicitly in Java code.<\/li>\n<\/ol>\n<h2>Hint<\/h2>\n<p>Think about the production scenario where the choice genuinely improves the code.<\/p>\n<h2>Answer and rationale<\/h2>\n<p><strong>Correct answer:<\/strong> B. Use a doubly linked list for structures like LRU caches where nodes move between ends and removals happen from the middle.<\/p>\n<p>Use a doubly linked list for structures like LRU caches where nodes move between ends and removals happen from the middle. Interviewers often ask this to see whether you can connect the concept to real design decisions.<\/p>\n<p><strong>Track:<\/strong> Java<\/p>\n","protected":false},"excerpt":{"rendered":"<p>When should a Java developer choose Doubly Linked Lists deliberately?<\/p>\n","protected":false},"author":1,"featured_media":0,"template":"","topic":[55,3,4],"difficulty":[7],"class_list":["post-23974","sharp_quiz","type-sharp_quiz","status-publish","hentry","topic-data-structures-doubly-linked-lists","topic-java","topic-java-interview-questions","difficulty-medium"],"_links":{"self":[{"href":"https:\/\/sharpinterview.online\/index.php?rest_route=\/wp\/v2\/sharp_quiz\/23974","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sharpinterview.online\/index.php?rest_route=\/wp\/v2\/sharp_quiz"}],"about":[{"href":"https:\/\/sharpinterview.online\/index.php?rest_route=\/wp\/v2\/types\/sharp_quiz"}],"author":[{"embeddable":true,"href":"https:\/\/sharpinterview.online\/index.php?rest_route=\/wp\/v2\/users\/1"}],"wp:attachment":[{"href":"https:\/\/sharpinterview.online\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=23974"}],"wp:term":[{"taxonomy":"topic","embeddable":true,"href":"https:\/\/sharpinterview.online\/index.php?rest_route=%2Fwp%2Fv2%2Ftopic&post=23974"},{"taxonomy":"difficulty","embeddable":true,"href":"https:\/\/sharpinterview.online\/index.php?rest_route=%2Fwp%2Fv2%2Fdifficulty&post=23974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}