{"id":31489,"date":"2023-08-23T22:02:28","date_gmt":"2023-10-10T07:44:23","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java%e7%9a%84hashmap%e7%b1%bb\/"},"modified":"2024-04-30T19:49:14","modified_gmt":"2024-04-30T11:49:14","slug":"java%e7%9a%84hashmap%e7%b1%bb","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java%e7%9a%84hashmap%e7%b1%bb\/","title":{"rendered":"Java\u7684HashMap\u7c7b"},"content":{"rendered":"<h1>\u3010Java\u54c8\u5e0c\u56fe\u7c7b\u3011<\/h1>\n<p>\u7531\u4e8e\u5728Java\u4e2d\u7ecf\u5e38\u4f7f\u7528HashMap\uff0c\u6240\u4ee5\u6211\u6574\u7406\u4e86\u4e00\u6b21\u590d\u4e60\u3002<\/p>\n<h2>\u5730\u56fe (d\u00ec t\u00fa)<\/h2>\n<p>Map\u548cList\u3001Set\u3001Queue\u662f\u4e0d\u540c\u7684\u5143\u7d20\u7ba1\u7406\u65b9\u5f0f\u3002<br \/>\nMap\u662f\u901a\u8fc7\u952e\u503c\u5bf9\u6765\u7ba1\u7406\u5143\u7d20\u3002<\/p>\n<h2>\u54c8\u5e0c\u56fe<\/h2>\n<p>HashMap\u662fMap\u63a5\u53e3\u7684\u57fa\u672c\u5b9e\u73b0\u7c7b\u4e4b\u4e00\u3002<br \/>\n\u5b83\u7684\u952e\u4e0d\u80fd\u91cd\u590d\uff0c\u4e14\u6ca1\u6709\u987a\u5e8f\u3002<\/p>\n<h2>HashMap\u7c7b\u7684\u4e3b\u8981\u65b9\u6cd5<\/h2>\n<h3>\u30fb\u83b7\u53d6\u5927\u5c0f `int size( )`<\/h3>\n<p>\u83b7\u53d6\u5730\u56fe\u5143\u7d20\u7684\u6570\u91cf<\/p>\n<h3>\u30fb\u660e\u786e\u7684( )<\/h3>\n<p>\u5220\u9664\u6240\u6709\u5143\u7d20<\/p>\n<h3>\u83b7\u53d6(\u5bf9\u8c61\u952e key)<\/h3>\n<p>\u83b7\u53d6\u4e0ekey\u5bf9\u5e94\u7684\u503c<\/p>\n<h3>\u00b7 \u83b7\u53d6\u952e\u96c6\u5408(keySet())<\/h3>\n<p>\u83b7\u53d6\u6240\u6709\u7684\u952e<\/p>\n<h3>\u30fb\u5b58\u653e\uff08\u952e\uff0c\u503c\uff09<\/h3>\n<p>\u6dfb\u52a0\u6307\u5b9a\u7684key\u3001value\u7ec4\u5408\u3002<\/p>\n<h3>\u662f\u5426\u4e3a\u7a7a( )<\/h3>\n<p>\u5224\u65adMap\u662f\u5426\u4e3a\u7a7a\u3002<\/p>\n<h3>\u30fb\u5220\u9664\uff08\u5bf9\u8c61\u952e\uff09<\/h3>\n<p>\u5220\u9664\u6307\u5b9a\u7684key<\/p>\n<h3>\u6536\u96c6\u7684\u503c()<\/h3>\n<p>\u83b7\u53d6\u6240\u6709\u7684\u503c<\/p>\n<h3>\u5305\u542b\u952e\uff08Object key\uff09<\/h3>\n<p>\u5224\u65adMap\u4e2d\u662f\u5426\u5305\u542b\u4e86key\u3002<\/p>\n<h3>\u5305\u542b\u503c\uff08Object value\uff09<\/h3>\n<p>\u5224\u65advalue\u662f\u5426\u5305\u542b\u5728Map\u4e2d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3010Java\u54c8\u5e0c\u56fe\u7c7b\u3011 \u7531\u4e8e\u5728Java\u4e2d\u7ecf\u5e38\u4f7f\u7528HashMap\uff0c\u6240\u4ee5\u6211\u6574\u7406\u4e86\u4e00\u6b21\u590d\u4e60\u3002 \u5730\u56fe (d\u00ec t\u00fa) M [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-31489","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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