{"id":6530,"date":"2023-06-04T19:09:29","date_gmt":"2023-06-04T19:09:29","guid":{"rendered":"https:\/\/otus.ru\/journal\/?p=6530"},"modified":"2024-01-18T18:31:36","modified_gmt":"2024-01-18T18:31:36","slug":"interfejs-map-v-java","status":"publish","type":"post","link":"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/","title":{"rendered":"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_61 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >\u0421\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#%D0%9E%D0%BF%D1%80%D0%B5%D0%B4%D0%B5%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5_%D0%B8_%D0%B2%D0%B8%D0%B4%D1%8B\" title=\"\u041e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u0438 \u0432\u0438\u0434\u044b\">\u041e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u0438 \u0432\u0438\u0434\u044b<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#%D0%9E%D1%81%D0%BE%D0%B1%D0%B5%D0%BD%D0%BD%D0%BE%D1%81%D1%82%D0%B8_the_maps\" title=\"\u041e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 the maps\">\u041e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 the maps<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D0%BD%D1%8B%D0%B5_%D0%BE%D0%BF%D0%B5%D1%80%D0%B0%D1%86%D0%B8%D0%B8\" title=\"\u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438\">\u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#%D0%A1%D0%BE%D0%B7%D0%B4%D0%B0%D0%BD%D0%B8%D0%B5\" title=\"\u0421\u043e\u0437\u0434\u0430\u043d\u0438\u0435\">\u0421\u043e\u0437\u0434\u0430\u043d\u0438\u0435<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#%D0%94%D0%BE%D0%B1%D0%B0%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5_%D0%B2%D1%81%D1%82%D0%B0%D0%B2%D0%BA%D0%B0_%D0%B7%D0%B0%D0%BF%D0%B8%D1%81%D0%B5%D0%B9\" title=\"\u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u0435 (\u0432\u0441\u0442\u0430\u0432\u043a\u0430) \u0437\u0430\u043f\u0438\u0441\u0435\u0439\">\u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u0435 (\u0432\u0441\u0442\u0430\u0432\u043a\u0430) \u0437\u0430\u043f\u0438\u0441\u0435\u0439<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#%D0%94%D1%83%D0%B1%D0%BB%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5_%D0%BA%D0%BB%D1%8E%D1%87%D0%B5%D0%B9\" title=\"\u0414\u0443\u0431\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043a\u043b\u044e\u0447\u0435\u0439\">\u0414\u0443\u0431\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043a\u043b\u044e\u0447\u0435\u0439<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#%D0%9F%D0%BE%D0%BB%D1%83%D1%87%D0%B5%D0%BD%D0%B8%D0%B5_%D0%B8%D0%BD%D1%84%D0%BE%D1%80%D0%BC%D0%B0%D1%86%D0%B8%D0%B8\" title=\"\u041f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0435 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438\">\u041f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0435 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#%D0%A3%D0%B4%D0%B0%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5_%D1%8D%D0%BB%D0%B5%D0%BC%D0%B5%D0%BD%D1%82%D0%BE%D0%B2\" title=\"\u0423\u0434\u0430\u043b\u0435\u043d\u0438\u0435 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432\">\u0423\u0434\u0430\u043b\u0435\u043d\u0438\u0435 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#%D0%A0%D0%B0%D0%B7%D0%BC%D0%B5%D1%80%D1%8B\" title=\"\u0420\u0430\u0437\u043c\u0435\u0440\u044b\">\u0420\u0430\u0437\u043c\u0435\u0440\u044b<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#%D0%9F%D1%80%D0%BE%D1%81%D0%BC%D0%BE%D1%82%D1%80_%D0%BA%D0%BE%D0%BB%D0%BB%D0%B5%D0%BA%D1%86%D0%B8%D0%B9\" title=\"\u041f\u0440\u043e\u0441\u043c\u043e\u0442\u0440 \u043a\u043e\u043b\u043b\u0435\u043a\u0446\u0438\u0439\">\u041f\u0440\u043e\u0441\u043c\u043e\u0442\u0440 \u043a\u043e\u043b\u043b\u0435\u043a\u0446\u0438\u0439<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#KeySet\" title=\"KeySet\">KeySet<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#The_value_%D0%B8_EntrySet\" title=\"The value \u0438 EntrySet\">The value \u0438 EntrySet<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#%D0%98%D1%82%D0%B5%D1%80%D0%B0%D1%86%D0%B8%D0%B8\" title=\"\u0418\u0442\u0435\u0440\u0430\u0446\u0438\u0438\">\u0418\u0442\u0435\u0440\u0430\u0446\u0438\u0438<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#%D0%9F%D1%80%D0%B8%D0%BC%D0%B5%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5_Foreach\" title=\"\u041f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435 Foreach\">\u041f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435 Foreach<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#%D0%A1%D0%BE%D1%80%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B0_%D0%BF%D0%BE_%D0%BA%D0%BB%D1%8E%D1%87%D1%83\" title=\"\u0421\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u043a\u0430 \u043f\u043e \u043a\u043b\u044e\u0447\u0443\">\u0421\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u043a\u0430 \u043f\u043e \u043a\u043b\u044e\u0447\u0443<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#%D0%9F%D0%BE_%D0%B7%D0%BD%D0%B0%D1%87%D0%B5%D0%BD%D0%B8%D1%8E\" title=\"\u041f\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044e\">\u041f\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044e<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/#Java_9\" title=\"Java 9\">Java 9<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">MAP \u2013 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 \u0434\u0430\u043d\u043d\u044b\u0445, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0430\u044f \u0432 \u0441\u0435\u0431\u044f \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0440 \u00ab\u043a\u043b\u044e\u0447\u2013\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435\u00bb. \u041d\u0430\u043f\u043e\u043c\u0438\u043d\u0430\u0435\u0442 \u0441\u043b\u043e\u0432\u0430\u0440\u044c, \u0438\u0437-\u0437\u0430 \u0447\u0435\u0433\u043e \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442 \u0447\u0430\u0441\u0442\u043e \u0442\u0430\u043a \u0438 \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f. MAP \u2013 \u044d\u0442\u043e \u0435\u0449\u0435 \u0438 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441. \u0412 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u043e\u043c JDK \u043e\u043d \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0441\u0440\u0430\u0437\u0443 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0439. \u041e\u0434\u043d\u0430 \u0438\u0437 \u043d\u0438\u0445 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0431\u043e\u043b\u0435\u0435 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043d\u043e\u0439 \u0438 \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f Hashmap. \u041e\u043d\u0430 \u0431\u0443\u0434\u0435\u0442 \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0435\u043d\u0430 \u0431\u043e\u043b\u0435\u0435 \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%9E%D0%BF%D1%80%D0%B5%D0%B4%D0%B5%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5_%D0%B8_%D0%B2%D0%B8%D0%B4%D1%8B\"><\/span>\u041e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u0438 \u0432\u0438\u0434\u044b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The map in Java \u2013 \u044d\u0442\u043e \u0432\u0435\u0440\u0448\u0438\u043d\u0430 \u0438\u0435\u0440\u0430\u0440\u0445\u0438\u0438 Java Collection. \u0421\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0430 \u0432 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0439 JDK, \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u0432\u0435\u0440\u0441\u0438\u0438 1.2. \u041f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0441\u0442\u0443 \u0431\u0430\u0437\u043e\u0432\u044b\u0435 \u043c\u0435\u0442\u043e\u0434\u044b \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u0434\u0430\u043d\u043d\u044b\u043c\u0438, \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u043c\u0438 \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u043f\u0430\u0440 \u00ab\u043a\u043b\u044e\u0447\u2013\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435\u00bb. \u0424\u0443\u043d\u043a\u0446\u0438\u0438 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430 \u0440\u0430\u0441\u0448\u0438\u0440\u044f\u044e\u0442\u0441\u044f \u0432\u043c\u0435\u0441\u0442\u0435 \u0441 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f\u043c\u0438 \u0438 \u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u0435\u043c Java.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"439\" height=\"250\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-36.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6531\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-36.png 439w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-36-300x171.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-36-150x85.png 150w\" sizes=\"auto, (max-width: 439px) 100vw, 439px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-36.png\",\"width\":\"439\",\"height\":\"250\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u044b\u0448\u0435 \u043c\u043e\u0436\u043d\u043e \u0443\u0432\u0438\u0434\u0435\u0442\u044c \u0438\u0435\u0440\u0430\u0440\u0445\u0438\u044e the maps. \u0421\u0440\u0435\u0434\u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0439 \u044d\u0442\u043e\u0442 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0432\u044b\u0434\u0435\u043b\u044f\u0435\u0442:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hashmap;<\/li>\n\n\n\n<li>LinkedHashMap;<\/li>\n\n\n\n<li>TreeMap.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0435\u0440\u0432\u044b\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043d\u0430\u0438\u0431\u043e\u043b\u044c\u0448\u0438\u043c \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435\u043c. \u041e\u043d \u0431\u0443\u0434\u0435\u0442 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0432 \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0434\u0430\u043b\u0435\u0435 \u043f\u0440\u0438\u043c\u0435\u0440\u0430\u0445 \u0432 \u043f\u043e\u0434\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u043c \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u0435.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041a\u0430\u0440\u0442\u044b \u2013 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b \u0434\u0430\u043d\u043d\u044b\u0445, \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u0435 \u0434\u043b\u044f \u0431\u044b\u0441\u0442\u0440\u043e\u0433\u043e \u043f\u043e\u0438\u0441\u043a\u0430. \u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u0431\u0443\u0434\u0435\u0442 \u0445\u0440\u0430\u043d\u0438\u0442\u044c\u0441\u044f \u043f\u043e \u0442\u0438\u043f\u0443 \u00abkey \u2013 value\u00bb. \u041a\u0430\u0436\u0434\u044b\u0439 \u043a\u043b\u044e\u0447 \u0432 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u0439 \u043f\u043e\u0434\u0431\u043e\u0440\u043a\u0435 \u0443\u043d\u0438\u043a\u0430\u043b\u0435\u043d. \u041a\u0430\u0436\u0434\u044b\u0439 \u043a\u043b\u044e\u0447 \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u0435\u0442 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044e. \u0421\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u043f\u0430\u0440\u044b \u00abkey \u2013 values\u00bb \u043d\u0430\u0437\u044b\u0432\u0430\u044e\u0442\u0441\u044f \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0430\u043c\u0438 \u043a\u0430\u0440\u0442\u044b.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Java.util.MAP \u2013 \u044d\u0442\u043e the interface, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0438\u0439 \u0432 \u0441\u0435\u0431\u044f \u0441\u0438\u0433\u043d\u0430\u0442\u0443\u0440\u044b \u043c\u0435\u0442\u043e\u0434\u043e\u0432 \u0434\u043b\u044f \u0432\u0441\u0442\u0430\u0432\u043a\u0438, \u0438\u0437\u0432\u043b\u0435\u0447\u0435\u043d\u0438\u044f, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0443\u0434\u0430\u043b\u0435\u043d\u0438\u044f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%9E%D1%81%D0%BE%D0%B1%D0%B5%D0%BD%D0%BD%D0%BE%D1%81%D1%82%D0%B8_the_maps\"><\/span>\u041e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 the maps<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u044b Map \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u044e\u0442\u0441\u044f \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u043c\u0438 \u043a\u043b\u0430\u0441\u0441\u0430\u043c\u0438 \u0432 Collections Framework. \u041a\u0430\u0436\u0434\u044b\u0439 \u0438\u0437 \u043d\u0438\u0445 \u2013 \u044d\u0442\u043e \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u0430\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u044c \u043f\u043e\u0442\u043e\u043a\u043e\u0432. \u0421\u0430\u043c\u044b\u0439 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043d\u044b\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u0443\u0436\u0435 \u0431\u044b\u043b \u0443\u043f\u043e\u043c\u044f\u043d\u0443\u0442 \u2013 HashMap. \u041e\u043d \u0432\u0441\u0442\u0440\u0435\u0447\u0430\u0435\u0442\u0441\u044f \u0432 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u043c\u0430\u0441\u0441\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439, \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 JDK.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041a\u0430\u0440\u0442\u044b \u2013 \u0435\u0434\u0438\u043d\u0441\u0442\u0432\u0435\u043d\u043d\u0430\u044f \u043a\u043e\u043b\u043b\u0435\u043a\u0446\u0438\u044f Collections Framework, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043d\u0435 \u0440\u0430\u0441\u0448\u0438\u0440\u044f\u0435\u0442 \u0438 \u043d\u0435 \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u0442 \u043d\u0435\u043f\u043e\u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0435\u043d\u043d\u043e \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 \u043a\u043e\u043b\u043b\u0435\u043a\u0446\u0438\u0438. The Map \u043d\u0435 \u043f\u043e\u0434\u043e\u0439\u0434\u0435\u0442 \u0434\u043b\u044f \u043a\u043e\u043d\u0442\u0440\u0430\u043a\u0442\u0430, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u0442\u0440\u0435\u0431\u0443\u0435\u0442 \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u043f\u0430\u0440\u0430\u043c\u0438, \u0430 \u043d\u0435 \u0441 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u043c\u0438 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f\u043c\u0438.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D0%BD%D1%8B%D0%B5_%D0%BE%D0%BF%D0%B5%D1%80%D0%B0%D1%86%D0%B8%D0%B8\"><\/span>\u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0427\u0442\u043e\u0431\u044b \u043f\u043e\u043b\u043d\u043e\u0446\u0435\u043d\u043d\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u043a\u043e\u043b\u043b\u0435\u043a\u0446\u0438\u044f\u043c\u0438 the map \u0432 Java, \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0437\u043d\u0430\u0442\u044c methods \u0434\u043b\u044f \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0442\u043e\u0433\u043e \u0438\u043b\u0438 \u0438\u043d\u043e\u0433\u043e \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u0430. \u0414\u0430\u043b\u0435\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u043e\u0438\u0442 \u0438\u0437\u0443\u0447\u0438\u0442\u044c \u043a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u043a\u043e\u043c\u0430\u043d\u0434\u044b. \u041e\u043d\u0438 \u043f\u043e\u043c\u043e\u0433\u0443\u0442 \u0441 \u0434\u0430\u043b\u044c\u043d\u0435\u0439\u0448\u0438\u043c \u043e\u0441\u0432\u043e\u0435\u043d\u0438\u0435\u043c \u0438\u0437\u0443\u0447\u0430\u0435\u043c\u043e\u0433\u043e \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%A1%D0%BE%D0%B7%D0%B4%D0%B0%D0%BD%D0%B8%D0%B5\"><\/span>\u0421\u043e\u0437\u0434\u0430\u043d\u0438\u0435<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u043e\u0437\u0434\u0430\u043d\u0438\u0435 (create) \u043f\u043e\u0434\u0440\u0430\u0437\u0443\u043c\u0435\u0432\u0430\u0435\u0442, \u0447\u0442\u043e \u043a\u043b\u044e\u0447\u0438 \u0438 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u043a\u0430\u0440\u0442\u044b \u043c\u043e\u0433\u0443\u0442 \u0431\u044b\u0442\u044c \u0441\u0441\u044b\u043b\u043a\u0430\u043c\u0438 \u043b\u044e\u0431\u043e\u0433\u043e \u0442\u0438\u043f\u0430. \u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u043f\u0440\u0438\u043c\u0438\u0442\u0438\u0432\u043d\u044b\u0439 \u0442\u0438\u043f \u0434\u0430\u043d\u043d\u044b\u0445 \u0438\u0437-\u0437\u0430 \u0438\u043c\u0435\u044e\u0449\u0438\u0445\u0441\u044f \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0439 \u043d\u0435 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u0441\u044f. \u041e\u043d\u0438 \u043d\u0430\u043f\u0440\u044f\u043c\u0443\u044e \u0441\u0432\u044f\u0437\u0430\u043d\u044b \u0441 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u043e\u0439 \u0434\u0436\u0435\u043d\u0435\u0440\u0438\u043a\u043e\u0432.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The HashMap \u0440\u0430\u0437\u0440\u0435\u0448\u0430\u0435\u0442 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0435 \u043e\u0434\u043d\u043e\u0433\u043e \u043d\u0443\u043b\u0435\u0432\u043e\u0433\u043e \u043a\u043b\u044e\u0447\u0430 (the key) \u0438 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u043d\u0443\u043b\u0435\u0432\u044b\u0445 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 (values). \u041e\u043d \u043d\u0435 \u0441\u043e\u0445\u0440\u0430\u043d\u044f\u0435\u0442 \u043f\u043e\u0440\u044f\u0434\u043e\u043a \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u0438 \u043d\u0435 \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u0443\u0435\u0442, \u0447\u0442\u043e \u043e\u043d \u0432\u0441\u0435\u0433\u0434\u0430 \u0431\u0443\u0434\u0435\u0442 \u043d\u0435\u0438\u0437\u043c\u0435\u043d\u043d\u044b\u043c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u043e\u0437\u0434\u0430\u043d\u0438\u0435 (creating) HashMap \u0441 \u0446\u0435\u043b\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u044b\u043c\u0438 \u043a\u043b\u044e\u0447\u0430\u043c\u0438 \u0438 \u0441\u0442\u0440\u043e\u043a\u043e\u0432\u044b\u043c\u0438 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f\u043c\u0438 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0442\u0430\u043a:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>Map&lt;Integer, String&gt; map = new HashMap&lt;&gt;();<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u0441\u0435 \u043c\u0435\u0442\u043e\u0434\u044b (methods), \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0435 \u0434\u0430\u043b\u0435\u0435, \u043f\u043e\u0434\u043e\u0439\u0434\u0443\u0442 \u0434\u043b\u044f \u043b\u044e\u0431\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 the map \u0438\u0437 Collections Framework. \u0421\u0432\u044f\u0437\u0430\u043d\u043e \u044d\u0442\u043e \u0441 \u0442\u0435\u043c, \u0447\u0442\u043e \u0432\u0441\u0435 \u043a\u0430\u0440\u0442\u044b \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u044e\u0442 maps interface.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%94%D0%BE%D0%B1%D0%B0%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5_%D0%B2%D1%81%D1%82%D0%B0%D0%B2%D0%BA%D0%B0_%D0%B7%D0%B0%D0%BF%D0%B8%D1%81%D0%B5%D0%B9\"><\/span>\u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u0435 (\u0432\u0441\u0442\u0430\u0432\u043a\u0430) \u0437\u0430\u043f\u0438\u0441\u0435\u0439<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u043b\u044f \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u0432 \u043a\u0430\u0440\u0442\u0443 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043c\u0435\u0442\u043e\u0434 put. \u041e\u043d \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0432\u0441\u0435\u0433\u043e \u0434\u0432\u0430 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u043a\u043b\u044e\u0447;<\/li>\n\n\n\n<li>\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u0430\u043b\u0435\u0435 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043c\u0435\u0442\u043e\u0434\u044b \u0431\u0443\u0434\u0443\u0442 \u0438\u0437\u0443\u0447\u0435\u043d\u044b \u043d\u0430 \u043d\u0430\u0433\u043b\u044f\u0434\u043d\u044b\u0445 \u043f\u0440\u0438\u043c\u0435\u0440\u0430\u0445. \u0412 \u0441\u043b\u0443\u0447\u0430\u0435 \u0441 put the mapping \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0437\u0430\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u0430\u0440\u0442\u0443 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u0430\u043c\u0438 \u0438 \u0438\u043c\u0435\u043d\u0430\u043c\u0438:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>map.put(1, \"Petyr Baelish\");<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>map.put(2, \"Sansa Stark\");<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>map.put(3, \"Jon Snow\");<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>map.put(4, \"Jamie Lannister\");<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041d\u0438\u0436\u0435 \u2013 \u043f\u0440\u0438\u043c\u0435\u0440 \u0442\u043e\u0433\u043e, \u043a\u0430\u043a \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442 \u0432\u044b\u0433\u043b\u044f\u0434\u0438\u0442 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0433\u043e \u0444\u0440\u0430\u0433\u043c\u0435\u043d\u0442\u0430 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043a\u043e\u0434\u0430:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"264\" height=\"198\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-38.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6533\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-38.png 264w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-38-150x113.png 150w\" sizes=\"auto, (max-width: 264px) 100vw, 264px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-38.png\",\"width\":\"264\",\"height\":\"198\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0418\u043d\u043e\u0433\u0434\u0430 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0434\u043e\u0431\u0430\u0432\u0438\u0442\u044c \u0441\u0440\u0430\u0437\u0443 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u0438\u043b\u0438 \u043e\u0431\u044a\u0435\u0434\u0438\u043d\u0438\u0442\u044c \u0434\u0432\u0435 \u043a\u0430\u0440\u0442\u044b. Put \u0432 \u044d\u0442\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u043d\u0435 \u043f\u043e\u0434\u043e\u0439\u0434\u0435\u0442. \u0414\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445 \u0437\u0430\u0434\u0430\u0447 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043a\u043e\u043c\u0430\u043d\u0434\u0430 put all. \u041e\u043d\u0430 \u0431\u0443\u0434\u0435\u0442 \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0441\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0437\u0430\u043f\u0438\u0441\u0438 \u043e\u0442 \u043e\u0434\u043d\u043e\u0439 \u043a\u0430\u0440\u0442\u044b \u0434\u043b\u044f \u043d\u0435\u043f\u043e\u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0433\u043e \u0437\u0430\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0434\u0440\u0443\u0433\u043e\u0439.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%94%D1%83%D0%B1%D0%BB%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5_%D0%BA%D0%BB%D1%8E%D1%87%D0%B5%D0%B9\"><\/span>\u0414\u0443\u0431\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043a\u043b\u044e\u0447\u0435\u0439<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The keys \u0432 \u043a\u0430\u0440\u0442\u0430\u0445 \u043d\u0435 \u043c\u043e\u0433\u0443\u0442 \u0434\u0443\u0431\u043b\u0438\u0440\u043e\u0432\u0430\u0442\u044c\u0441\u044f. \u0415\u0441\u043b\u0438 \u043f\u043e\u043f\u044b\u0442\u0430\u0442\u044c\u0441\u044f \u0432\u0441\u0442\u0430\u0432\u0438\u0442\u044c \u0443\u0436\u0435 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u043a\u043b\u044e\u0447, \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u0441\u044f \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0430\u044f \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u044f:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">map.put(4, &#171;Daenerys Targaryen&#187;);<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"318\" height=\"194\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-40.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6535\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-40.png 318w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-40-300x183.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-40-150x92.png 150w\" sizes=\"auto, (max-width: 318px) 100vw, 318px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-40.png\",\"width\":\"318\",\"height\":\"194\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0417\u0434\u0435\u0441\u044c \u043c\u0435\u0442\u043e\u0434 put \u0432\u0435\u0440\u043d\u0435\u0442 \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0435\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435, \u0435\u0441\u043b\u0438 \u0435\u0433\u043e \u0445\u043e\u0447\u0435\u0442\u0441\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c. \u0415\u0441\u043b\u0438 \u043f\u0440\u0435\u0434\u044b\u0434\u0443\u0449\u0435\u0433\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u043d\u0435 \u0431\u044b\u043b\u043e, \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442\u0441\u044f Null.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043d\u0430\u043b\u0438\u0447\u0438\u044f \u043a\u043b\u044e\u0447\u0430 \u043d\u0430 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0435 (creating) \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043c\u0435\u0442\u043e\u0434 containsKey:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>if (map.containsKey(4)) {<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>&nbsp;&nbsp;throw new IllegalArgumentException(\"Unable to add character, duplicate id\");<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>}<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412 \u0441\u043b\u0443\u0447\u0430\u0435 created values \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043c\u0435\u0442\u043e\u0434 containsValue():<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>boolean check = map.containsValue(\"Brienne of Tarth\"); \/\/ false<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u043f\u0440\u0438\u0435\u043c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u0440\u043e\u0432\u0435\u0440\u0438\u0442\u044c \u043d\u0430\u043b\u0438\u0447\u0438\u0435 \u0432 \u043a\u043e\u043b\u043b\u0435\u043a\u0446\u0438\u0438 (\u0441\u043b\u043e\u0432\u0430\u0440\u0435) \u0442\u043e\u0433\u043e \u0438\u043b\u0438 \u0438\u043d\u043e\u0433\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%9F%D0%BE%D0%BB%D1%83%D1%87%D0%B5%D0%BD%D0%B8%D0%B5_%D0%B8%D0%BD%D1%84%D0%BE%D1%80%D0%BC%D0%B0%D1%86%D0%B8%D0%B8\"><\/span>\u041f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0435 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u043a\u0430\u0440\u0442\u0430\u043c\u0438 \u0432 Java \u0438\u043d\u043e\u0433\u0434\u0430 \u043c\u044b \u043f\u043e\u043b\u0443\u0447\u0430\u0435\u043c \u0442\u0443 \u0438\u043b\u0438 \u0438\u043d\u0443\u044e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e. \u0414\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0439 the method. \u041e\u043d \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f get.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>String value = map.get(4); \/\/ Daenerys Targaryen<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u0430\u043d\u043d\u044b\u0439 \u043c\u0435\u0442\u043e\u0434 \u043f\u0440\u0438\u043d\u0438\u043c\u0430\u0435\u0442 \u043a\u043b\u044e\u0447, \u0430 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435, \u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u0441\u0432\u044f\u0437\u0430\u043d\u043e \u0441 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u043c the key. \u0415\u0441\u043b\u0438 \u00ab\u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b\u00bb \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u044e\u0442, get \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c NULL.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%A3%D0%B4%D0%B0%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5_%D1%8D%D0%BB%D0%B5%D0%BC%D0%B5%D0%BD%D1%82%D0%BE%D0%B2\"><\/span>\u0423\u0434\u0430\u043b\u0435\u043d\u0438\u0435 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u043c\u0435\u0441\u0442\u0435 \u0441 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0435\u043c (create) \u043a\u0430\u0440\u0442\u044b \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0442 \u0443\u0434\u0430\u043b\u0435\u043d\u0438\u0435. \u042d\u0442\u043e \u0435\u0449\u0435 \u043e\u0434\u043d\u0430 \u00ab\u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u0430\u044f\u00bb \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044f, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043e\u0442\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0441\u043b\u043e\u0432\u0430\u0440\u044c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u043b\u044f \u0443\u0434\u0430\u043b\u0435\u043d\u0438\u044f \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043c\u0435\u0442\u043e\u0434 the remove. \u041e\u043d \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0442\u0430\u043a:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u041f\u0440\u0438\u043d\u0438\u043c\u0430\u0435\u0442 \u043a\u043b\u044e\u0447 \u0432 \u0432\u0438\u0434\u0435 \u00ab\u0432\u0445\u043e\u0434\u043d\u043e\u0433\u043e\u00bb \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430.<\/li>\n\n\n\n<li>\u0418\u0449\u0435\u0442 \u0437\u0430\u043f\u0438\u0441\u044c, \u043a\u043e\u0442\u043e\u0440\u0443\u044e \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0443\u0434\u0430\u043b\u0438\u0442\u044c.<\/li>\n\n\n\n<li>\u0412\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u043e\u0435 \u0441 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u044b\u043c \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u043c. \u0415\u0441\u043b\u0438 \u043e\u043d\u043e \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442, \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u043e\u043c \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0431\u0443\u0434\u0435\u0442 NULL.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><code>map.remove(3); \/\/ removes and returns \"Jon Snow\"<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>map.remove(3); \/\/ removes nothing and returns null<\/code><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"297\" height=\"153\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-39.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6534\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-39.png 297w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-39-150x77.png 150w\" sizes=\"auto, (max-width: 297px) 100vw, 297px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-39.png\",\"width\":\"297\",\"height\":\"153\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u043b\u044f \u0442\u043e\u0433\u043e \u0447\u0442\u043e\u0431\u044b \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u00ab\u043e\u0447\u0438\u0449\u0435\u043d\u043d\u0443\u044e\u00bb \u043a\u0430\u0440\u0442\u0443, \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043a\u043e\u043c\u0430\u043d\u0434\u0430 clear. \u041e\u043d\u0430 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0430 \u043c\u0435\u0442\u043e\u0434\u043e\u043c void. \u041d\u0438\u0447\u0435\u0433\u043e \u043d\u0435 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"203\" height=\"68\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-37.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6532\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-37.png 203w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-37-150x50.png 150w\" sizes=\"auto, (max-width: 203px) 100vw, 203px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-37.png\",\"width\":\"203\",\"height\":\"68\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u044b\u0448\u0435 \u2013 \u043d\u0430\u0433\u043b\u044f\u0434\u043d\u044b\u0439 \u043f\u0440\u0438\u043c\u0435\u0440 (example) \u0444\u043e\u0440\u043c\u044b \u0437\u0430\u043f\u0438\u0441\u0438 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u0439 \u043a\u043e\u043c\u0430\u043d\u0434\u044b.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%A0%D0%B0%D0%B7%D0%BC%D0%B5%D1%80%D1%8B\"><\/span>\u0420\u0430\u0437\u043c\u0435\u0440\u044b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u044f size \u0432\u0435\u0440\u043d\u0435\u0442 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u043d\u0430 \u043a\u0430\u0440\u0442\u0435:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>int size = map.size();<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 isEmpty \u0443\u0434\u0430\u0441\u0442\u0441\u044f \u0432\u0435\u0440\u043d\u0443\u0442\u044c \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435. \u041e\u043d\u043e \u043f\u043e\u043a\u0430\u0436\u0435\u0442, \u043f\u0443\u0441\u0442\u0430 \u043b\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u0430\u044f collection, \u0438\u043b\u0438 \u043d\u0435\u0442.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>boolean isEmpty = map.isEmpty();<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0424\u043e\u0440\u043c\u0430\u0442 \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u0438\u044f \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438. \u042d\u0442\u043e\u0442 \u0444\u0440\u0430\u0433\u043c\u0435\u043d\u0442 \u043c\u043e\u0436\u043d\u043e \u0432\u0441\u0442\u0430\u0432\u0438\u0442\u044c \u0432 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0439 \u043a\u043e\u0434 \u0434\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043d\u0430 \u043f\u0443\u0441\u0442\u043e\u0442\u0443.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%9F%D1%80%D0%BE%D1%81%D0%BC%D0%BE%D1%82%D1%80_%D0%BA%D0%BE%D0%BB%D0%BB%D0%B5%D0%BA%D1%86%D0%B8%D0%B9\"><\/span>\u041f\u0440\u043e\u0441\u043c\u043e\u0442\u0440 \u043a\u043e\u043b\u043b\u0435\u043a\u0446\u0438\u0439<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The interfaces \u00ab\u041c\u0410\u041f\u00bb \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0442 \u043a\u043e\u043c\u0430\u043d\u0434\u044b, \u043f\u043e\u043c\u043e\u0433\u0430\u044e\u0449\u0438\u0435 \u043f\u0440\u043e\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0442\u044c collection. \u0421 \u0438\u0445 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0443\u0434\u0430\u0441\u0442\u0441\u044f \u0438\u0437\u0443\u0447\u0430\u0442\u044c \u043a\u0430\u0440\u0442\u0443 \u0441 \u0442\u043e\u0447\u043a\u0438 \u0437\u0440\u0435\u043d\u0438\u044f \u0442\u0438\u043f\u0430 \u043a\u043e\u043b\u043b\u0435\u043a\u0446\u0438\u0438. \u0421\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0438\u043c\u0435\u044e\u0442 \u0435\u0434\u0438\u043d\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0439 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c \u043f\u0435\u0440\u0435\u0431\u043e\u0440\u0430.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0434\u043b\u044f \u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440\u0430 collections \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u0442\u0430\u043a\u0438\u043c\u0438 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044f\u043c\u0438 \u043a\u0430\u043a:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>keySet \u2013 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u0432\u043e\u0437\u0432\u0440\u0430\u0442\u0430 \u043d\u0430\u0431\u043e\u0440\u0430 \u043a\u043b\u044e\u0447\u0435\u0439 \u0441 \u043a\u0430\u0440\u0442\u044b;<\/li>\n\n\n\n<li>values \u2013 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u043a\u043e\u043b\u043b\u0435\u043a\u0446\u0438\u044e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u0438 \u00ab\u041c\u0410\u041f\u00bb;<\/li>\n\n\n\n<li>entrySet \u2013 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u0432\u043e\u0437\u0432\u0440\u0430\u0442\u0430 \u043d\u0430\u0431\u043e\u0440\u0430 \u043e\u0431\u044a\u0435\u043a\u0442\u043e\u0432 Map.Empty, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u044b \u0432 \u0432\u0438\u0434\u0435 \u043f\u0430\u0440\u044b \u00ab\u043a\u043b\u044e\u0447\u2013\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435\u00bb \u043d\u0430 \u043a\u0430\u0440\u0442\u0435.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u0442\u043e\u0438\u0442 \u043f\u043e\u043c\u043d\u0438\u0442\u044c, \u0447\u0442\u043e \u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440\u044b \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u043e\u0439 \u043a\u0430\u0440\u0442\u043e\u0439. \u042d\u0442\u043e \u0437\u043d\u0430\u0447\u0438\u0442, \u0447\u0442\u043e \u043b\u044e\u0431\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f, \u0432\u043d\u0435\u0441\u0435\u043d\u043d\u044b\u0435 \u0432 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u0435, \u043e\u0431\u043d\u043e\u0432\u043b\u044f\u044e\u0442 \u00ab\u0431\u0430\u0437\u043e\u0432\u044b\u0439\u00bb \u043e\u0431\u044a\u0435\u043a\u0442. \u041e\u0431\u0440\u0430\u0442\u043d\u044b\u0439 \u043f\u0440\u0438\u043d\u0446\u0438\u043f \u0437\u0434\u0435\u0441\u044c \u0442\u043e\u0436\u0435 \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442. \u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043e\u043f\u0443\u0441\u043a\u0430\u044e\u0442 \u0443\u0434\u0430\u043b\u0435\u043d\u0438\u0435 created a value and keys, \u043d\u043e \u043d\u0435 \u0432\u0441\u0442\u0430\u0432\u043a\u0443.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"KeySet\"><\/span>KeySet<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">KeySet \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u0442\u043e\u0433\u043e, \u0447\u0442\u043e\u0431\u044b \u0432\u0435\u0440\u043d\u0443\u0442\u044c \u043d\u0430\u0431\u043e\u0440 \u043a\u043b\u044e\u0447\u0435\u0439, \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0449\u0438\u0445\u0441\u044f \u0432 \u043a\u0430\u0440\u0442\u0435:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>Set&lt;Integer&gt; keys = map.keySet(); \/\/ [1, 2, 4]<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u0440\u0443\u0433\u0438\u0445 \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u043a\u043e\u043c\u0430\u043d\u0434\u0430 \u043d\u0435 \u0438\u043c\u0435\u0435\u0442.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The_value_%D0%B8_EntrySet\"><\/span>The value \u0438 EntrySet<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u043e\u043b\u044c\u0437\u0443\u044f\u0441\u044c \u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440\u043e\u043c the java util map, \u0438\u043d\u043e\u0433\u0434\u0430 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0432\u0435\u0440\u043d\u0443\u0442\u044c the collection value, \u0445\u0440\u0430\u043d\u0438\u043c\u044b\u0445 \u0432 \u043a\u0430\u0440\u0442\u0435:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"124\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-41-1024x124.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6536\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-41-1024x124.png 1024w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-41-300x36.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-41-150x18.png 150w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-41-768x93.png 768w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-41.png 1140w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-41-1024x124.png\",\"width\":\"1024\",\"height\":\"124\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u0430\u044f \u043a\u043e\u043c\u0430\u043d\u0434\u0430 \u043d\u0435 \u0432\u0435\u0440\u043d\u0435\u0442 \u0432\u0441\u044e \u043a\u043e\u043b\u043b\u0435\u043a\u0446\u0438\u044e \u0432\u043c\u0435\u0441\u0442\u043e \u043d\u0430\u0431\u043e\u0440\u0430. \u0421\u0432\u044f\u0437\u0430\u043d\u043e \u044d\u0442\u043e \u0441 \u0442\u0435\u043c, \u0447\u0442\u043e \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u043a\u0430\u0440\u0442\u044b \u043d\u0435 \u043e\u0431\u044f\u0437\u0430\u0442\u0435\u043b\u044c\u043d\u043e \u044f\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u043c\u0438. \u041d\u0430\u0431\u043e\u0440 \u0432 \u044d\u0442\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043d\u0435 \u0431\u0443\u0434\u0435\u0442.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 entrySet \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a \u0441\u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043d\u0430\u0431\u043e\u0440 \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u0432 the collection. \u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u043e\u043c \u0441\u0442\u0430\u043d\u0435\u0442 \u043d\u0430\u0431\u043e\u0440 \u043e\u0431\u044a\u0435\u043a\u0442\u043e\u0432 the Map.Entry. \u041e\u0431\u044a\u0435\u043a\u0442\u044b the Map.Entry \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u044b \u0432 \u0432\u0438\u0434\u0435 \u043f\u0430\u0440\u044b \u00ab\u043a\u043b\u044e\u0447\u2013\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435\u00bb. \u0414\u043b\u044f \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u0434\u043e\u043f\u0443\u0441\u043a\u0430\u0435\u0442\u0441\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0442\u0430\u043a\u0438\u0445 \u043a\u043e\u043c\u0430\u043d\u0434 \u043a\u0430\u043a getKey \u0438 getValue.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">EntrySet \u0447\u0430\u0441\u0442\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0446\u0438\u043a\u043b\u043e\u0432.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%98%D1%82%D0%B5%D1%80%D0%B0%D1%86%D0%B8%D0%B8\"><\/span>\u0418\u0442\u0435\u0440\u0430\u0446\u0438\u0438<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0418\u0442\u0435\u0440\u0430\u0446\u0438\u0438 \u043f\u043e the mapping collections \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u044b \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u043c\u0438 \u0441\u043f\u043e\u0441\u043e\u0431\u0430\u043c\u0438. \u0414\u0430\u043b\u0435\u0435 \u0431\u0443\u0434\u0443\u0442 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u044b \u043d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043d\u044b\u0435 \u043a\u043e\u043d\u0446\u0435\u043f\u0446\u0438\u0438 \u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u0442\u043e\u0438\u0442 \u043e\u0431\u0440\u0430\u0442\u0438\u0442\u044c \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435 \u043d\u0430 \u0442\u043e, \u0447\u0442\u043e \u0446\u0438\u043a\u043b\u044b \u0432\u044b\u0437\u044b\u0432\u0430\u044e\u0442 \u0438\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435 the NullPointerException. \u042d\u0442\u043e \u043f\u0440\u043e\u0438\u0437\u043e\u0439\u0434\u0435\u0442, \u0435\u0441\u043b\u0438 \u043f\u043e\u043f\u044b\u0442\u0430\u0442\u044c\u0441\u044f \u043f\u0435\u0440\u0435\u0431\u0440\u0430\u0442\u044c \u043d\u0443\u043b\u0435\u0432\u0443\u044e \u043a\u0430\u0440\u0442\u0443.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%9F%D1%80%D0%B8%D0%BC%D0%B5%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5_Foreach\"><\/span>\u041f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435 Foreach<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u041d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043d\u044b\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u0438\u0442\u0435\u0440\u0430\u0446\u0438\u0438 \u043f\u043e the map \u2013 \u044d\u0442\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 foreach. \u041e\u043d \u043f\u0440\u0435\u0434\u043f\u043e\u0447\u0442\u0438\u0442\u0435\u043b\u0435\u043d \u0434\u043b\u044f \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u043c\u0430\u0441\u0441\u044b \u0437\u0430\u0434\u0430\u0447.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"899\" height=\"121\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-42.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6537\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-42.png 899w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-42-300x40.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-42-150x20.png 150w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-42-768x103.png 768w\" sizes=\"auto, (max-width: 899px) 100vw, 899px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-42.png\",\"width\":\"899\",\"height\":\"121\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u0433\u043e \u0444\u0440\u0430\u0433\u043c\u0435\u043d\u0442\u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0443 \u0431\u0443\u0434\u0435\u0442 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0434\u043e\u0441\u0442\u0443\u043f \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043a \u043a\u043b\u044e\u0447\u0430\u043c, \u043d\u043e \u0438 \u043a \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f\u043c.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"889\" height=\"52\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-44.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6539\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-44.png 889w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-44-300x18.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-44-150x9.png 150w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-44-768x45.png 768w\" sizes=\"auto, (max-width: 889px) 100vw, 889px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-44.png\",\"width\":\"889\",\"height\":\"52\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u044b\u0448\u0435 \u2013 \u043d\u0430\u0433\u043b\u044f\u0434\u043d\u044b\u0439 \u043f\u0440\u0438\u043c\u0435\u0440 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u043b\u044f\u043c\u0431\u0434\u0430-\u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0439 \u0432 Java 8.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%A1%D0%BE%D1%80%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B0_%D0%BF%D0%BE_%D0%BA%D0%BB%D1%8E%D1%87%D1%83\"><\/span>\u0421\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u043a\u0430 \u043f\u043e \u043a\u043b\u044e\u0447\u0443<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hashmap \u043d\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0441\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u044c \u043f\u043e\u0440\u044f\u0434\u043e\u043a \u0432 \u0441\u0432\u043e\u0438\u0445 \u0437\u0430\u043f\u0438\u0441\u044f\u0445. \u041d\u0438\u0436\u0435 \u2013 \u043f\u0440\u0438\u043c\u0435\u0440, \u043d\u0430\u0433\u043b\u044f\u0434\u043d\u043e \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0443\u044e \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u044e:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"969\" height=\"288\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-43.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6538\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-43.png 969w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-43-300x89.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-43-150x45.png 150w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-43-768x228.png 768w\" sizes=\"auto, (max-width: 969px) 100vw, 969px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-43.png\",\"width\":\"969\",\"height\":\"288\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u043e\u0441\u043b\u0435 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043a\u043e\u0434\u0430 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0435 the map \u0431\u0443\u0434\u0435\u0442 \u0432\u044b\u0432\u0435\u0434\u0435\u043d\u043e \u0432 \u043a\u043e\u043d\u0441\u043e\u043b\u044c, \u043d\u043e \u0432 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u043e\u043c \u043f\u043e\u0440\u044f\u0434\u043a\u0435:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"288\" height=\"146\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-46.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6541\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-46.png 288w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-46-150x76.png 150w\" sizes=\"auto, (max-width: 288px) 100vw, 288px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-46.png\",\"width\":\"288\",\"height\":\"146\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 TreeMap \u043f\u0440\u043e\u0438\u0437\u043e\u0439\u0434\u0435\u0442 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0441\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u043a\u0430 \u043f\u043e \u043a\u043b\u044e\u0447\u0443. \u0412\u043e\u0442 \u0442\u0430\u043a \u0431\u0443\u0434\u0435\u0442 \u0432\u044b\u0433\u043b\u044f\u0434\u0435\u0442\u044c \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u0435 HashMap \u0432 the ThreeMap:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"209\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-49-1024x209.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6544\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-49-1024x209.png 1024w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-49-300x61.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-49-150x31.png 150w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-49-768x157.png 768w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-49.png 1052w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-49-1024x209.png\",\"width\":\"1024\",\"height\":\"209\"}<\/script><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"328\" height=\"161\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-50.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6545\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-50.png 328w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-50-300x147.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-50-150x74.png 150w\" sizes=\"auto, (max-width: 328px) 100vw, 328px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-50.png\",\"width\":\"328\",\"height\":\"161\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u044b\u0448\u0435 \u2013 \u043f\u0440\u0438\u043c\u0435\u0440 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0438 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0431\u0443\u0434\u0435\u0442 \u0432\u044b\u0432\u0435\u0434\u0435\u043d \u043d\u0435\u043f\u043e\u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0435\u043d\u043d\u043e \u043d\u0430 \u0434\u0438\u0441\u043f\u043b\u0435\u0439 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430. \u0422\u0430\u043a\u043e\u0439 \u043f\u043e\u0434\u0445\u043e\u0434 \u2013 \u044d\u0442\u043e \u0441\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u043a\u0430 \u043f\u043e \u043a\u043b\u044e\u0447\u0443.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%9F%D0%BE_%D0%B7%D0%BD%D0%B0%D1%87%D0%B5%D0%BD%D0%B8%D1%8E\"><\/span>\u041f\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0411\u043e\u043b\u0435\u0435 \u0441\u043b\u043e\u0436\u043d\u044b\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u0435\u043d\u0438\u044f \u0438\u0442\u0435\u0440\u0430\u0446\u0438\u0439 \u0432 \u043a\u0430\u0440\u0442\u0430\u0445 \u2013 \u044d\u0442\u043e \u0441\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u043a\u0430 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \u043f\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f\u043c. \u041d\u0438\u0436\u0435 \u2013 \u0444\u0440\u0430\u0433\u043c\u0435\u043d\u0442, \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u043e\u0436\u043d\u043e \u043e\u043f\u0438\u0440\u0430\u0442\u044c\u0441\u044f \u043f\u0440\u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043a\u043e\u043c\u0430\u043d\u0434\u044b:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"931\" height=\"516\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-51.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6546\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-51.png 931w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-51-300x166.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-51-150x83.png 150w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-51-768x426.png 768w\" sizes=\"auto, (max-width: 931px) 100vw, 931px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-51.png\",\"width\":\"931\",\"height\":\"516\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0417\u0434\u0435\u0441\u044c:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u0412 \u0441\u0442\u0440\u043e\u043a\u0435 3 \u0441\u043e\u0437\u0434\u0430\u0435\u0442\u0441\u044f \u0441\u043f\u0438\u0441\u043e\u043a \u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0437\u0430\u043f\u0438\u0441\u0435\u0439. \u041e\u043d\u0438 \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0442 \u0432 \u0441\u0435\u0431\u044f \u043e\u0431\u044a\u0435\u043a\u0442\u044b the map.Entry \u0438\u0437 \u043a\u0430\u0440\u0442\u044b, \u0432 \u043a\u043e\u0442\u043e\u0440\u0443\u044e \u0431\u044b\u043b \u043f\u0435\u0440\u0435\u0434\u0430\u043d \u043c\u0435\u0442\u043e\u0434.<\/li>\n\n\n\n<li>\u0421\u0442\u0440\u043e\u043a\u0438 5-10 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u0432\u043c\u0435\u0441\u0442\u0435 \u0441 Collections.sort(). \u0412 \u043d\u0438\u0445 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d Comparator \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 entry.getValue. \u042d\u0442\u043e \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0434\u043b\u044f \u0442\u043e\u0433\u043e, \u0447\u0442\u043e\u0431\u044b \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u043f\u043e\u043d\u0438\u043c\u0430\u043b\u0430, \u043a\u0430\u043a \u0438\u043c\u0435\u043d\u043d\u043e \u0441\u0440\u0430\u0432\u043d\u0438\u0432\u0430\u0442\u044c \u0437\u0430\u043f\u0438\u0441\u0438. \u041e\u043d\u0438 \u0431\u0443\u0434\u0443\u0442 \u043e\u0442\u0441\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u044b \u043f\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044e.<\/li>\n\n\n\n<li>\u0412 12 \u0441\u0442\u0440\u043e\u0447\u043a\u0435 \u0441\u043e\u0437\u0434\u0430\u0435\u0442\u0441\u044f LinkedHashMap. \u041e\u043d \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u043e\u0431\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043a\u0430\u0440\u0442\u044b, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0441\u043e\u0445\u0440\u0430\u043d\u044f\u0435\u0442 \u043f\u043e\u0440\u044f\u0434\u043e\u043a \u0432\u0441\u0442\u0430\u0432\u043a\u0438 \u0438\u043c\u0435\u044e\u0449\u0438\u0445\u0441\u044f \u0437\u0430\u043f\u0438\u0441\u0435\u0439.<\/li>\n\n\n\n<li>\u0421\u0442\u0440\u043e\u043a\u0438 14-16 \u0434\u0430\u044e\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u00ab\u043f\u0435\u0440\u0435\u0431\u0440\u0430\u0442\u044c\u00bb \u0441\u043f\u0438\u0441\u043e\u043a \u0438 \u0437\u0430\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043d\u043e\u0432\u0443\u044e the map.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"874\" height=\"279\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-48.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6543\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-48.png 874w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-48-300x96.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-48-150x48.png 150w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-48-768x245.png 768w\" sizes=\"auto, (max-width: 874px) 100vw, 874px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-48.png\",\"width\":\"874\",\"height\":\"279\"}<\/script><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"228\" height=\"131\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-47.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6542\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-47.png 228w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-47-150x86.png 150w\" sizes=\"auto, (max-width: 228px) 100vw, 228px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-47.png\",\"width\":\"228\",\"height\":\"131\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u044b\u0448\u0435 \u2013 \u043d\u0430\u0433\u043b\u044f\u0434\u043d\u044b\u0439 \u043f\u0440\u0438\u043c\u0435\u0440 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u0433\u043e \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u0430 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0438\u0442\u0435\u0440\u0430\u0446\u0438\u0439 \u0432 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0438. \u041f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u043c\u043e\u0433\u0443\u0442 \u0443\u0432\u0438\u0434\u0435\u0442\u044c \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u0444\u0440\u0430\u0433\u043c\u0435\u043d\u0442 \u043a\u043e\u0434\u0430, \u043d\u043e \u0438 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442, \u0432\u044b\u0432\u043e\u0434\u0438\u043c\u044b\u0439 \u043d\u0430 \u0434\u0438\u0441\u043f\u043b\u0435\u0435.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Java_9\"><\/span>Java 9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 the map \u0432 Java 9 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0441\u0430\u0445\u0430\u0440 \u0434\u043b\u044f \u043d\u0435\u0438\u0437\u043c\u0435\u043d\u043d\u044b\u0445 \u043a\u0430\u0440\u0442. \u041f\u043e\u0434 \u043d\u0438\u043c\u0438 \u043f\u043e\u0434\u0440\u0430\u0437\u0443\u043c\u0435\u0432\u0430\u0435\u0442\u0441\u044f \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043d\u0435 \u043c\u043e\u0436\u0435\u0442 \u0438\u0437\u043c\u0435\u043d\u044f\u0442\u044c\u0441\u044f. \u0412 \u0442\u0430\u043a\u043e\u0439 \u043a\u0430\u0440\u0442\u0435 \u043d\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u043d\u0438 \u043a\u043e\u043c\u0430\u043d\u0434\u044b \u0443\u0434\u0430\u043b\u0435\u043d\u0438\u044f, \u043d\u0438 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043d\u043e\u0432\u044b\u0445 \u0437\u0430\u043f\u0438\u0441\u0435\u0439.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"706\" height=\"215\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-45.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6540\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-45.png 706w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-45-300x91.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-45-150x46.png 150w\" sizes=\"auto, (max-width: 706px) 100vw, 706px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-45.png\",\"width\":\"706\",\"height\":\"215\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u044b\u0448\u0435 \u043c\u043e\u0436\u043d\u043e \u0443\u0432\u0438\u0434\u0435\u0442\u044c \u043f\u0440\u0438\u043c\u0435\u0440 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0442\u0430\u043a\u043e\u0433\u043e \u043e\u0431\u044a\u0435\u043a\u0442\u0430 \u0432 Java 8. Java 9 \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u0442 \u0441\u0442\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0444\u0430\u0431\u0440\u0438\u0447\u043d\u044b\u0439 \u043c\u0435\u0442\u043e\u0434 Map.of. \u041e\u043d \u043d\u0443\u0436\u0435\u043d \u0434\u043b\u044f \u0443\u043f\u0440\u043e\u0449\u0435\u043d\u0438\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u043d\u0435\u0438\u0437\u043c\u0435\u043d\u043d\u044b\u0445 \u043a\u0430\u0440\u0442.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"80\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/Screenshot_1-1024x80.png\" alt=\"\u0418\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 MAP \u0432 Java\" class=\"wp-image-6550\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/Screenshot_1-1024x80.png 1024w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/Screenshot_1-300x23.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/Screenshot_1-150x12.png 150w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/Screenshot_1-768x60.png 768w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/Screenshot_1.png 1156w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/Screenshot_1-1024x80.png\",\"width\":\"1024\",\"height\":\"80\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041d\u0430 the map \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u043c\u0435\u0442\u043e\u0434\u044b \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0438 \u0443\u0434\u0430\u043b\u0435\u043d\u0438\u044f \u0437\u0430\u043f\u0438\u0441\u0435\u0439. \u041f\u0440\u0438 \u0438\u0445 \u0432\u044b\u0437\u043e\u0432\u0435 \u043f\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0438\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435 UnsupportedOperationException.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0422\u0435\u043f\u0435\u0440\u044c \u043e\u0441\u043d\u043e\u0432\u044b the mapping \u0432 Java \u0438\u0437\u0443\u0447\u0435\u043d\u044b \u0432 \u043e\u0431\u0449\u0438\u0445 \u0447\u0435\u0440\u0442\u0430\u0445. \u0417\u0434\u0435\u0441\u044c \u043c\u043e\u0436\u043d\u043e \u0443\u0432\u0438\u0434\u0435\u0442\u044c \u043d\u0430\u0433\u043b\u044f\u0434\u043d\u044b\u0439 \u043f\u0440\u0438\u043c\u0435\u0440 \u0442\u043e\u0433\u043e, \u043a\u0430\u043a \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u0430 \u0440\u0430\u0431\u043e\u0442\u0430 \u0441 \u043a\u0430\u0440\u0442\u0430\u043c\u0438. \u0411\u044b\u0441\u0442\u0440\u0435\u0435 \u0438 \u043b\u0443\u0447\u0448\u0435 \u0438\u0437\u0443\u0447\u0438\u0442\u044c \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442 \u0438 \u0438\u043d\u044b\u0435 <a href=\"https:\/\/otus.ru\/lessons\/java-specialization\/?utm_source=oj&amp;utm_medium=affilate&amp;utm_campaign=java_bandle\" title=\"\">\u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u044b \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043d\u0430 Java \u043f\u043e\u043c\u043e\u0433\u0443\u0442 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0435 \u0434\u0438\u0441\u0442\u0430\u043d\u0446\u0438\u043e\u043d\u043d\u044b\u0435 \u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440\u043d\u044b\u0435 \u043a\u0443\u0440\u0441\u044b<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>MAP \u2013 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 \u0434\u0430\u043d\u043d\u044b\u0445, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0430\u044f \u0432 \u0441\u0435\u0431\u044f \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0440 \u00ab\u043a\u043b\u044e\u0447\u2013\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435\u00bb. \u041d\u0430\u043f\u043e\u043c\u0438\u043d\u0430\u0435\u0442 \u0441\u043b\u043e\u0432\u0430\u0440\u044c, \u0438\u0437-\u0437\u0430 \u0447\u0435\u0433\u043e \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442 \u0447\u0430\u0441\u0442\u043e \u0442\u0430\u043a \u0438 \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f. MAP \u2013 \u044d\u0442\u043e \u0435\u0449\u0435 \u0438 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441. \u0412 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u043e\u043c JDK \u043e\u043d \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0441\u0440\u0430\u0437\u0443 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0439. \u041e\u0434\u043d\u0430 \u0438\u0437 \u043d\u0438\u0445 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0431\u043e\u043b\u0435\u0435 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043d\u043e\u0439 \u0438 \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f Hashmap. \u041e\u043d\u0430 \u0431\u0443\u0434\u0435\u0442 \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0435\u043d\u0430 \u0431\u043e\u043b\u0435\u0435 \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e. \u041e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u0438 \u0432\u0438\u0434\u044b The map in Java [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":6547,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[75],"class_list":["post-6530","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-polza","tag-java"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.8 - aioseo.com -->\n\t<meta name=\"description\" content=\"MAP \u2013 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 \u0434\u0430\u043d\u043d\u044b\u0445, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0430\u044f \u0432 \u0441\u0435\u0431\u044f \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0440 \u00ab\u043a\u043b\u044e\u0447\u2013\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435\u00bb. \u041d\u0430\u043f\u043e\u043c\u0438\u043d\u0430\u0435\u0442 \u0441\u043b\u043e\u0432\u0430\u0440\u044c, \u0438\u0437-\u0437\u0430 \u0447\u0435\u0433\u043e \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442 \u0447\u0430\u0441\u0442\u043e \u0442\u0430\u043a \u0438 \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f. MAP \u2013 \u044d\u0442\u043e \u0435\u0449\u0435 \u0438 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441. \u0412 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u043e\u043c JDK \u043e\u043d \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0441\u0440\u0430\u0437\u0443 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0439. \u041e\u0434\u043d\u0430 \u0438\u0437 \u043d\u0438\u0445 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0431\u043e\u043b\u0435\u0435 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043d\u043e\u0439 \u0438 \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f Hashmap. \u041e\u043d\u0430 \u0431\u0443\u0434\u0435\u0442 \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0435\u043d\u0430 \u0431\u043e\u043b\u0435\u0435 \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e. \u041e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u0438 \u0432\u0438\u0434\u044b The map in Java\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"A. Pavlenko\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/otus.ru\/journal\/interfejs-map-v-java\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.8\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/otus.ru\\\/journal\\\/interfejs-map-v-java\\\/#article\",\"name\":\"\\u0418\\u043d\\u0442\\u0435\\u0440\\u0444\\u0435\\u0439\\u0441 MAP \\u0432 Java OTUS\",\"headline\":\"\\u0418\\u043d\\u0442\\u0435\\u0440\\u0444\\u0435\\u0439\\u0441 MAP \\u0432 Java\",\"author\":{\"@id\":\"https:\\\/\\\/otus.ru\\\/journal\\\/author\\\/a-pavlenko\\\/#author\"},\"publisher\":{\"@id\":\"https:\\\/\\\/otus.ru\\\/journal\\\/#organization\"},\"image\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/otus.ru\\\/journal\\\/wp-content\\\/uploads\\\/2023\\\/06\\\/oj-1080x72052-1.jpg\",\"width\":2245,\"height\":1587},\"datePublished\":\"2023-06-04T19:09:29+00:00\",\"dateModified\":\"2024-01-18T18:31:36+00:00\",\"inLanguage\":\"ru-RU\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/otus.ru\\\/journal\\\/interfejs-map-v-java\\\/#webpage\"},\"isPartOf\":{\"@id\":\"https:\\\/\\\/otus.ru\\\/journal\\\/interfejs-map-v-java\\\/#webpage\"},\"articleSection\":\"\\u041f\\u043e\\u043b\\u0435\\u0437\\u043d\\u043e\\u0435, Java\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/otus.ru\\\/journal\\\/interfejs-map-v-java\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/otus.ru\\\/journal#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/otus.ru\\\/journal\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/otus.ru\\\/journal\\\/category\\\/polza\\\/#listItem\",\"name\":\"\\u041f\\u043e\\u043b\\u0435\\u0437\\u043d\\u043e\\u0435\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/otus.ru\\\/journal\\\/category\\\/polza\\\/#listItem\",\"position\":2,\"name\":\"\\u041f\\u043e\\u043b\\u0435\\u0437\\u043d\\u043e\\u0435\",\"item\":\"https:\\\/\\\/otus.ru\\\/journal\\\/category\\\/polza\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/otus.ru\\\/journal\\\/interfejs-map-v-java\\\/#listItem\",\"name\":\"\\u0418\\u043d\\u0442\\u0435\\u0440\\u0444\\u0435\\u0439\\u0441 MAP \\u0432 Java\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/otus.ru\\\/journal#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/otus.ru\\\/journal\\\/interfejs-map-v-java\\\/#listItem\",\"position\":3,\"name\":\"\\u0418\\u043d\\u0442\\u0435\\u0440\\u0444\\u0435\\u0439\\u0441 MAP \\u0432 Java\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/otus.ru\\\/journal\\\/category\\\/polza\\\/#listItem\",\"name\":\"\\u041f\\u043e\\u043b\\u0435\\u0437\\u043d\\u043e\\u0435\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/otus.ru\\\/journal\\\/#organization\",\"name\":\"\\u041e\\u0442\\u0443\\u0441 \\u043e\\u043d\\u043b\\u0430\\u0439\\u043d-\\u043e\\u0431\\u0440\\u0430\\u0437\\u043e\\u0432\\u0430\\u043d\\u0438\\u0435\",\"description\":\"\\u0411\\u043b\\u043e\\u0433 \\u043f\\u0440\\u043e IT\",\"url\":\"https:\\\/\\\/otus.ru\\\/journal\\\/\",\"telephone\":\"+74999389202\",\"logo\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/otus.ru\\\/journal\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/OTUS-journal-logo-180x180-1.png\",\"@id\":\"https:\\\/\\\/otus.ru\\\/journal\\\/interfejs-map-v-java\\\/#organizationLogo\",\"width\":180,\"height\":180},\"image\":{\"@id\":\"https:\\\/\\\/otus.ru\\\/journal\\\/interfejs-map-v-java\\\/#organizationLogo\"},\"sameAs\":[\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UCetgtvy93o3i3CvyGXKFU3g\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/otus.ru\\\/journal\\\/author\\\/a-pavlenko\\\/#author\",\"url\":\"https:\\\/\\\/otus.ru\\\/journal\\\/author\\\/a-pavlenko\\\/\",\"name\":\"A. 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