{"id":31283,"date":"2022-12-28T20:02:16","date_gmt":"2023-10-14T20:15:19","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java%e4%b8%ad%e7%9a%84map%e7%9a%84%e4%bd%bf%e7%94%a8%e5%9c%ba%e6%99%af-2\/"},"modified":"2025-08-12T23:14:08","modified_gmt":"2025-08-12T15:14:08","slug":"java%e4%b8%ad%e7%9a%84map%e7%9a%84%e4%bd%bf%e7%94%a8%e5%9c%ba%e6%99%af-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java%e4%b8%ad%e7%9a%84map%e7%9a%84%e4%bd%bf%e7%94%a8%e5%9c%ba%e6%99%af-2\/","title":{"rendered":"Java\u4e2d\u7684Map\u7684\u4f7f\u7528\u573a\u666f"},"content":{"rendered":"

\u5730\u56fe\uff08d\u00ec t\u00fa\uff09\u662f\u4ec0\u4e48\uff1f<\/h2>\n

\u53ef\u4ee5\u5c06\u201c\u952e\u201d\u548c\u201c\u503c\u201d\u914d\u5bf9\uff0c\u7528\u4e8e\u5b58\u50a8\u591a\u4e2a\u503c\u7684\u5143\u7d20<\/p>\n

\u5730\u56fe\u7684\u79cd\u7c7b<\/h2>\n

\u56e0\u4e3aMap\u662f\u4e00\u4e2a\u63a5\u53e3\uff0c\u6240\u4ee5\u9700\u8981\u51c6\u5907\u5b9e\u73b0\u7c7b\u6765\u4f7f\u7528\u3002
\n\u53ef\u4ee5\u4f7f\u7528HashMap\u3001LinkedHashMap\u3001TreeMap\u7b49\u5b9e\u73b0\u7c7b\u3002<\/p>\n

Map\u7684\u65b9\u6cd5<\/h2>\n

\u7528put\u65b9\u6cd5\u5411Map\u4e2d\u6dfb\u52a0\u6570\u636e\u3002<\/p>\n

\u4eceMap\u4e2d\u4f7f\u7528get\u65b9\u6cd5\u83b7\u53d6\u6570\u636e\u3002<\/p>\n

3. \u4f7f\u7528 keySet \u65b9\u6cd5\uff0c\u5c06 Map \u7684\u6240\u6709\u952e\u8fdb\u884c\u8f93\u51fa\u3002<\/p>\n

\u80fd\u5728\u8fd9\u79cd\u65f6\u5019\u4f7f\u7528\u7684\u3002<\/h2>\n

\u30fb\u5f53\u9700\u8981\u5c06\u5927\u91cf\u4e8b\u7269\u4e0e\u4e3b\u952e\u5173\u8054\u65f6\u3002<\/p>\n

\u6dfb\u52a0\u4eceA\u5230Z\u768426\u4e2a\u5b57\u6bcd\u3002<\/p>\n

Map<Character,Integer> atozMap = new HashMap<>() {\r\n        \t{\r\n        \t\r\n        \t\tfor(char c = 'a';c < 'z'+1;c++) {\r\n        \t\t\tput(c,0);\r\n        \t\t}\r\n        \t}\r\n        };\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u5730\u56fe\uff08d\u00ec t\u00fa\uff09\u662f\u4ec0\u4e48\uff1f \u53ef\u4ee5\u5c06\u201c\u952e\u201d\u548c\u201c\u503c\u201d\u914d\u5bf9\uff0c\u7528\u4e8e\u5b58\u50a8\u591a\u4e2a\u503c\u7684\u5143\u7d20 \u5730\u56fe\u7684\u79cd\u7c7b \u56e0\u4e3aMap\u662f\u4e00\u4e2a\u63a5\u53e3\uff0c […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31283","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\nJava\u4e2d\u7684Map\u7684\u4f7f\u7528\u573a\u666f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8eJava\u4e2d\u7684Map\u7684\u4f7f\u7528\u573a\u666f\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/java\u4e2d\u7684map\u7684\u4f7f\u7528\u573a\u666f-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java\u4e2d\u7684Map\u7684\u4f7f\u7528\u573a\u666f\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8eJava\u4e2d\u7684Map\u7684\u4f7f\u7528\u573a\u666f\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/java\u4e2d\u7684map\u7684\u4f7f\u7528\u573a\u666f-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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