{"id":120640,"date":"2024-03-23T23:13:36","date_gmt":"2024-03-23T14:13:36","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9e%e3%83%83%e3%83%97%e3%81%8b%e3%82%89%e8%a6%81%e7%b4%a0%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/"},"modified":"2024-04-04T16:27:15","modified_gmt":"2024-04-04T07:27:15","slug":"java%e3%81%a7%e3%83%9e%e3%83%83%e3%83%97%e3%81%8b%e3%82%89%e8%a6%81%e7%b4%a0%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9e%e3%83%83%e3%83%97%e3%81%8b%e3%82%89%e8%a6%81%e7%b4%a0%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/","title":{"rendered":"Java\u3067\u30de\u30c3\u30d7\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>Map\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u306b\u306f\u3001Java\u3067\u306fremove(key)\u30e1\u30bd\u30c3\u30c9\u304c\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u6307\u5b9a\u3057\u305f\u30ad\u30fc\u306e\u8981\u7d20\u3092\u524a\u9664\u3057\u3066\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u518d\u5e30\u7684\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>Map&lt;String, Integer&gt; map = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">HashMap<\/span>&lt;&gt;();\r\nmap.put(<span class=\"hljs-string\">\"A\"<\/span>, <span class=\"hljs-number\">1<\/span>);\r\nmap.put(<span class=\"hljs-string\">\"B\"<\/span>, <span class=\"hljs-number\">2<\/span>);\r\nmap.put(<span class=\"hljs-string\">\"C\"<\/span>, <span class=\"hljs-number\">3<\/span>);\r\nmap.remove(<span class=\"hljs-string\">\"B\"<\/span>); <span class=\"hljs-comment\">\/\/ \u5220\u9664\u952e\u4e3a\"B\"\u7684\u5143\u7d20<\/span>\r\nSystem.out.println(map); <span class=\"hljs-comment\">\/\/ \u8f93\u51fa\uff1a{A=1, C=3}<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001Map \u306b 3 \u3064\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3057\u3001remove(&#8220;B&#8221;) \u3092\u4f7f\u7528\u3057\u3066 &#8220;B&#8221; \u30ad\u30fc\u306e\u8981\u7d20\u3092\u524a\u9664\u3057\u307e\u3059\u3002\u6700\u7d42\u7684\u306a\u51fa\u529b\u7d50\u679c\u306f {A=1, C=3} \u3067\u3001&#8221;B&#8221; \u30ad\u30fc\u306e\u8981\u7d20\u304c\u6b63\u5e38\u306b\u524a\u9664\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Map\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u306b\u306f\u3001Java\u3067\u306fremove(key)\u30e1\u30bd\u30c3\u30c9\u304c\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u6307\u5b9a\u3057\u305f\u30ad\u30fc\u306e\u8981\u7d20\u3092\u524a\u9664\u3057\u3066\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u518d\u5e30\u7684\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002 Map&lt;String, Integer&gt; [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-120640","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) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java\u3067\u30de\u30c3\u30d7\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u3067\u30de\u30c3\u30d7\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java\u3067\u30de\u30c3\u30d7\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"Map\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u306b\u306f\u3001Java\u3067\u306fremove(key)\u30e1\u30bd\u30c3\u30c9\u304c\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u6307\u5b9a\u3057\u305f\u30ad\u30fc\u306e\u8981\u7d20\u3092\u524a\u9664\u3057\u3066\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u518d\u5e30\u7684\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002 Map&lt;String, Integer&gt; [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/java\u3067\u30de\u30c3\u30d7\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-23T14:13:36+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-04T07:27:15+00:00\" \/>\n<meta name=\"author\" content=\"\u967d, \u5411\u5b87\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u967d, \u5411\u5b87\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9e%e3%83%83%e3%83%97%e3%81%8b%e3%82%89%e8%a6%81%e7%b4%a0%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/\",\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9e%e3%83%83%e3%83%97%e3%81%8b%e3%82%89%e8%a6%81%e7%b4%a0%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/\",\"name\":\"Java\u3067\u30de\u30c3\u30d7\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5 - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#website\"},\"datePublished\":\"2024-03-23T14:13:36+00:00\",\"dateModified\":\"2024-04-04T07:27:15+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/4aef6196128551a0f5d66db46c42866c\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9e%e3%83%83%e3%83%97%e3%81%8b%e3%82%89%e8%a6%81%e7%b4%a0%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/#breadcrumb\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9e%e3%83%83%e3%83%97%e3%81%8b%e3%82%89%e8%a6%81%e7%b4%a0%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9e%e3%83%83%e3%83%97%e3%81%8b%e3%82%89%e8%a6%81%e7%b4%a0%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.silicloud.com\/ja\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Java\u3067\u30de\u30c3\u30d7\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/\",\"name\":\"Blog - Silicon Cloud\",\"description\":\"\",\"inLanguage\":\"ja\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/4aef6196128551a0f5d66db46c42866c\",\"name\":\"\u967d, \u5411\u5b87\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/ad96b120e219751fa368cbd7d2c48ca01b59185e6ed394449bac72614a760bf3?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/ad96b120e219751fa368cbd7d2c48ca01b59185e6ed394449bac72614a760bf3?s=96&d=mm&r=g\",\"caption\":\"\u967d, \u5411\u5b87\"},\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/author\/hinatasora\/\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9e%e3%83%83%e3%83%97%e3%81%8b%e3%82%89%e8%a6%81%e7%b4%a0%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Java\u3067\u30de\u30c3\u30d7\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5 - Blog - Silicon Cloud","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.silicloud.com\/ja\/blog\/java\u3067\u30de\u30c3\u30d7\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5\/","og_locale":"ja_JP","og_type":"article","og_title":"Java\u3067\u30de\u30c3\u30d7\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5","og_description":"Map\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u306b\u306f\u3001Java\u3067\u306fremove(key)\u30e1\u30bd\u30c3\u30c9\u304c\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u6307\u5b9a\u3057\u305f\u30ad\u30fc\u306e\u8981\u7d20\u3092\u524a\u9664\u3057\u3066\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u518d\u5e30\u7684\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002 Map&lt;String, Integer&gt; [&hellip;]","og_url":"https:\/\/www.silicloud.com\/ja\/blog\/java\u3067\u30de\u30c3\u30d7\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5\/","og_site_name":"Blog - Silicon Cloud","article_published_time":"2024-03-23T14:13:36+00:00","article_modified_time":"2024-04-04T07:27:15+00:00","author":"\u967d, \u5411\u5b87","twitter_card":"summary_large_image","twitter_misc":{"\u57f7\u7b46\u8005":"\u967d, \u5411\u5b87"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9e%e3%83%83%e3%83%97%e3%81%8b%e3%82%89%e8%a6%81%e7%b4%a0%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/","url":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9e%e3%83%83%e3%83%97%e3%81%8b%e3%82%89%e8%a6%81%e7%b4%a0%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/","name":"Java\u3067\u30de\u30c3\u30d7\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5 - Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/ja\/blog\/#website"},"datePublished":"2024-03-23T14:13:36+00:00","dateModified":"2024-04-04T07:27:15+00:00","author":{"@id":"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/4aef6196128551a0f5d66db46c42866c"},"breadcrumb":{"@id":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9e%e3%83%83%e3%83%97%e3%81%8b%e3%82%89%e8%a6%81%e7%b4%a0%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/#breadcrumb"},"inLanguage":"ja","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9e%e3%83%83%e3%83%97%e3%81%8b%e3%82%89%e8%a6%81%e7%b4%a0%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9e%e3%83%83%e3%83%97%e3%81%8b%e3%82%89%e8%a6%81%e7%b4%a0%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.silicloud.com\/ja\/blog\/"},{"@type":"ListItem","position":2,"name":"Java\u3067\u30de\u30c3\u30d7\u304b\u3089\u8981\u7d20\u3092\u524a\u9664\u3059\u308b\u65b9\u6cd5"}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/ja\/blog\/#website","url":"https:\/\/www.silicloud.com\/ja\/blog\/","name":"Blog - Silicon Cloud","description":"","inLanguage":"ja"},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/4aef6196128551a0f5d66db46c42866c","name":"\u967d, \u5411\u5b87","image":{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/ad96b120e219751fa368cbd7d2c48ca01b59185e6ed394449bac72614a760bf3?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/ad96b120e219751fa368cbd7d2c48ca01b59185e6ed394449bac72614a760bf3?s=96&d=mm&r=g","caption":"\u967d, \u5411\u5b87"},"url":"https:\/\/www.silicloud.com\/ja\/blog\/author\/hinatasora\/"},{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e3%83%9e%e3%83%83%e3%83%97%e3%81%8b%e3%82%89%e8%a6%81%e7%b4%a0%e3%82%92%e5%89%8a%e9%99%a4%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/#local-main-organization-logo","url":"","contentUrl":"","caption":"Blog - Silicon Cloud"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/120640","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/comments?post=120640"}],"version-history":[{"count":2,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/120640\/revisions"}],"predecessor-version":[{"id":283287,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/posts\/120640\/revisions\/283287"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/media?parent=120640"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/categories?post=120640"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/ja\/blog\/wp-json\/wp\/v2\/tags?post=120640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}