{"id":24053,"date":"2026-06-03T04:23:27","date_gmt":"2026-06-03T04:23:27","guid":{"rendered":"https:\/\/sharpinterview.online\/?sharp_quiz=java-interview-linkedhashmap-lru-comparison"},"modified":"2026-06-03T04:23:27","modified_gmt":"2026-06-03T04:23:27","slug":"java-interview-linkedhashmap-lru-comparison","status":"publish","type":"sharp_quiz","link":"https:\/\/sharpinterview.online\/?sharp_quiz=java-interview-linkedhashmap-lru-comparison","title":{"rendered":"Java: In Java, which comparison about LRU Cache with LinkedHashMap is accurate?"},"content":{"rendered":"

Question<\/h2>\n

In Java, which comparison about LRU Cache with LinkedHashMap is accurate?<\/p>\n

    \n
  1. A plain HashMap cannot track recency by itself, while LinkedHashMap can maintain recency order alongside lookup.<\/li>\n
  2. There is no practical difference in behavior, performance, or API design when LRU Cache with LinkedHashMap is involved.<\/li>\n
  3. The oldest option related to LRU Cache with LinkedHashMap is always the right production choice regardless of context.<\/li>\n
  4. Differences around LRU Cache with LinkedHashMap are mostly cosmetic, so correctness and maintainability do not change.<\/li>\n<\/ol>\n

    Hint<\/h2>\n

    Focus on the behavior or tradeoff, not just the keyword.<\/p>\n

    Answer and rationale<\/h2>\n

    Correct answer:<\/strong> A. A plain HashMap cannot track recency by itself, while LinkedHashMap can maintain recency order alongside lookup.<\/p>\n

    A plain HashMap cannot track recency by itself, while LinkedHashMap can maintain recency order alongside lookup. This is the comparison that usually separates memorization from understanding.<\/p>\n

    Track:<\/strong> Java<\/p>\n","protected":false},"excerpt":{"rendered":"

    In Java, which comparison about LRU Cache with LinkedHashMap is accurate?<\/p>\n","protected":false},"author":1,"featured_media":0,"template":"","topic":[71,3,4],"difficulty":[6],"class_list":["post-24053","sharp_quiz","type-sharp_quiz","status-publish","hentry","topic-collections-lru-cache-with-linkedhashmap","topic-java","topic-java-interview-questions","difficulty-easy"],"_links":{"self":[{"href":"https:\/\/sharpinterview.online\/index.php?rest_route=\/wp\/v2\/sharp_quiz\/24053","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=24053"}],"wp:term":[{"taxonomy":"topic","embeddable":true,"href":"https:\/\/sharpinterview.online\/index.php?rest_route=%2Fwp%2Fv2%2Ftopic&post=24053"},{"taxonomy":"difficulty","embeddable":true,"href":"https:\/\/sharpinterview.online\/index.php?rest_route=%2Fwp%2Fv2%2Fdifficulty&post=24053"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}