{"id":13371,"date":"2022-10-03T21:33:25","date_gmt":"2022-10-03T16:03:25","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-to-iterate-complicated-list-of-maps-containing-maps\/"},"modified":"2022-10-03T21:33:25","modified_gmt":"2022-10-03T16:03:25","slug":"solved-how-to-iterate-complicated-list-of-maps-containing-maps","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-to-iterate-complicated-list-of-maps-containing-maps\/","title":{"rendered":"[Solved] How to iterate complicated List of Maps containing Maps"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-31539908\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"31539908\" data-parentid=\"31539751\" data-score=\"3\" 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>How about this?<\/p>\n<pre><code>    ArrayList&lt;HashMap&lt;String, HashMap&lt;String, String&gt;&gt;&gt; list = new ArrayList&lt;&gt;();\n\n    for (HashMap&lt;String, HashMap&lt;String, String&gt;&gt; m : list) {\n        for (Map.Entry&lt;String, HashMap&lt;String, String&gt;&gt; e : m.entrySet()) {\n            String key1 = e.getKey();\n            for (Map.Entry&lt;String, String&gt; me : e.getValue().entrySet()) {\n                String key2 = me.getKey();\n                String value = me.getValue();\n            }\n        }\n    }\n<\/code><\/pre>\n<p>Note that you really should be using the interface form of the objects:<\/p>\n<pre><code>    List&lt;Map&lt;String, Map&lt;String, String&gt;&gt;&gt; list = new ArrayList&lt;&gt;();\n\n    for (Map&lt;String, Map&lt;String, String&gt;&gt; m : list) {\n        \/\/ All Maps.\n        for (Map.Entry&lt;String, Map&lt;String, String&gt;&gt; e : m.entrySet()) {\n            \/\/ Outer key.\n            String key1 = e.getKey();\n            for (Map.Entry&lt;String, String&gt; me : e.getValue().entrySet()) {\n                \/\/ Inner key.\n                String key2 = me.getKey();\n                \/\/ The String value.\n                String value = me.getValue();\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 iterate complicated List of Maps containing Maps <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] How about this? ArrayList&lt;HashMap&lt;String, HashMap&lt;String, String&gt;&gt;&gt; list = new ArrayList&lt;&gt;(); for (HashMap&lt;String, HashMap&lt;String, String&gt;&gt; m : list) { for (Map.Entry&lt;String, HashMap&lt;String, String&gt;&gt; e : m.entrySet()) { String key1 = e.getKey(); for (Map.Entry&lt;String, String&gt; me : e.getValue().entrySet()) { String key2 = me.getKey(); String value = me.getValue(); } } } Note that you really should be &#8230; <a title=\"[Solved] How to iterate complicated List of Maps containing Maps\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-iterate-complicated-list-of-maps-containing-maps\/\" aria-label=\"More on [Solved] How to iterate complicated List of Maps containing Maps\">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":[1616,350,323,540],"class_list":["post-13371","post","type-post","status-publish","format-standard","hentry","category-solved","tag-collections","tag-iterator","tag-java","tag-list"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] How to iterate complicated List of Maps containing Maps - 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-iterate-complicated-list-of-maps-containing-maps\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] How to iterate complicated List of Maps containing Maps - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] How about this? ArrayList&lt;HashMap&lt;String, HashMap&lt;String, String&gt;&gt;&gt; list = new ArrayList&lt;&gt;(); for (HashMap&lt;String, HashMap&lt;String, String&gt;&gt; m : list) { for (Map.Entry&lt;String, HashMap&lt;String, String&gt;&gt; e : m.entrySet()) { String key1 = e.getKey(); for (Map.Entry&lt;String, String&gt; me : e.getValue().entrySet()) { String key2 = me.getKey(); String value = me.getValue(); } } } Note that you really should be ... 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ArrayList&lt;HashMap&lt;String, HashMap&lt;String, String&gt;&gt;&gt; list = new ArrayList&lt;&gt;(); for (HashMap&lt;String, HashMap&lt;String, String&gt;&gt; m : list) { for (Map.Entry&lt;String, HashMap&lt;String, String&gt;&gt; e : m.entrySet()) { String key1 = e.getKey(); for (Map.Entry&lt;String, String&gt; me : e.getValue().entrySet()) { String key2 = me.getKey(); String value = me.getValue(); } } } Note that you really should be ... 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