{"id":24043,"date":"2026-06-03T04:23:27","date_gmt":"2026-06-03T04:23:27","guid":{"rendered":"https:\/\/sharpinterview.online\/?sharp_quiz=java-interview-hashset-dedup-comparison"},"modified":"2026-06-03T04:23:27","modified_gmt":"2026-06-03T04:23:27","slug":"java-interview-hashset-dedup-comparison","status":"publish","type":"sharp_quiz","link":"https:\/\/sharpinterview.online\/?sharp_quiz=java-interview-hashset-dedup-comparison","title":{"rendered":"Java: In Java, which comparison about HashSet Membership and Deduplication is accurate?"},"content":{"rendered":"<h2>Question<\/h2>\n<p>In Java, which comparison about HashSet Membership and Deduplication is accurate?<\/p>\n<ol type=\"A\">\n<li>There is no practical difference in behavior, performance, or API design when HashSet Membership and Deduplication is involved.<\/li>\n<li>The oldest option related to HashSet Membership and Deduplication is always the right production choice regardless of context.<\/li>\n<li>It is better than a List for repeated contains checks when order and duplicates are not important.<\/li>\n<li>Differences around HashSet Membership and Deduplication are mostly cosmetic, so correctness and maintainability do not change.<\/li>\n<\/ol>\n<h2>Hint<\/h2>\n<p>Focus on the behavior or tradeoff, not just the keyword.<\/p>\n<h2>Answer and rationale<\/h2>\n<p><strong>Correct answer:<\/strong> C. It is better than a List for repeated contains checks when order and duplicates are not important.<\/p>\n<p>It is better than a List for repeated contains checks when order and duplicates are not important. This is the comparison that usually separates memorization from understanding.<\/p>\n<p><strong>Track:<\/strong> Java<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In Java, which comparison about HashSet Membership and Deduplication is accurate?<\/p>\n","protected":false},"author":1,"featured_media":0,"template":"","topic":[69,3,4],"difficulty":[6],"class_list":["post-24043","sharp_quiz","type-sharp_quiz","status-publish","hentry","topic-collections-hashset-membership-and-deduplication","topic-java","topic-java-interview-questions","difficulty-easy"],"_links":{"self":[{"href":"https:\/\/sharpinterview.online\/index.php?rest_route=\/wp\/v2\/sharp_quiz\/24043","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=24043"}],"wp:term":[{"taxonomy":"topic","embeddable":true,"href":"https:\/\/sharpinterview.online\/index.php?rest_route=%2Fwp%2Fv2%2Ftopic&post=24043"},{"taxonomy":"difficulty","embeddable":true,"href":"https:\/\/sharpinterview.online\/index.php?rest_route=%2Fwp%2Fv2%2Fdifficulty&post=24043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}