{"id":15542,"date":"2022-10-12T01:36:45","date_gmt":"2022-10-11T20:06:45","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-to-remove-duplicate-value-from-hash-map-closed\/"},"modified":"2022-10-12T01:36:45","modified_gmt":"2022-10-11T20:06:45","slug":"solved-how-to-remove-duplicate-value-from-hash-map-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-to-remove-duplicate-value-from-hash-map-closed\/","title":{"rendered":"[Solved] how to remove duplicate value from hash map [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-21625811\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"21625811\" data-parentid=\"21625772\" data-score=\"2\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>Your HashMap is <code>hm<\/code>. Put the values of <code>hm<\/code> in another HashMap <code>hm2<\/code> in which the values of <code>hm<\/code> are the keys of <code>hm2<\/code>, and the values of <code>hm2<\/code> can be anything (e.g. the object Boolean.TRUE).<\/p>\n<p>Then loop through that second HashMap <code>hm2<\/code> and print out its keys.<\/p>\n<p>Instead of <code>HashMap<\/code> you can also use <code>HashSet<\/code> for <code>hm2<\/code> (this is even better as you would not need the Boolean.TRUE part).<\/p>\n<pre><code>import java.util.HashMap;\nimport java.util.HashSet;\n\npublic class MyClass {\n\n    public static void main(String[] args) {\n\n        HashMap&lt;Integer, String&gt; hm = new HashMap&lt;Integer, String&gt;();\n        hm.put(1, \"Anil\");\n        hm.put(2, \"Deven\");\n        hm.put(3, \"sanjay\");\n        hm.put(4, \"sanjay\");\n        hm.put(5, \"Raj\");\n        hm.put(6, \"sanjay\");\n\n        HashSet&lt;String&gt; hm2 = new HashSet&lt;String&gt;();\n        hm2.addAll(hm.values());\n\n        for (String str : hm2){\n            System.out.println(str);\n        }\n    }\n\n}\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">0<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved how to remove duplicate value from hash map [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Your HashMap is hm. Put the values of hm in another HashMap hm2 in which the values of hm are the keys of hm2, and the values of hm2 can be anything (e.g. the object Boolean.TRUE). Then loop through that second HashMap hm2 and print out its keys. Instead of HashMap you can also &#8230; <a title=\"[Solved] how to remove duplicate value from hash map [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-remove-duplicate-value-from-hash-map-closed\/\" aria-label=\"More on [Solved] how to remove duplicate value from hash map [closed]\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[323],"class_list":["post-15542","post","type-post","status-publish","format-standard","hentry","category-solved","tag-java"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] how to remove duplicate value from hash map [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-remove-duplicate-value-from-hash-map-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] how to remove duplicate value from hash map [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Your HashMap is hm. Put the values of hm in another HashMap hm2 in which the values of hm are the keys of hm2, and the values of hm2 can be anything (e.g. the object Boolean.TRUE). Then loop through that second HashMap hm2 and print out its keys. Instead of HashMap you can also ... 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Put the values of hm in another HashMap hm2 in which the values of hm are the keys of hm2, and the values of hm2 can be anything (e.g. the object Boolean.TRUE). Then loop through that second HashMap hm2 and print out its keys. Instead of HashMap you can also ... 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