{"id":50720,"date":"2023-06-04T13:38:42","date_gmt":"2023-05-19T07:01:40","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%a4%8d%e5%88%b6\/"},"modified":"2024-01-15T13:18:00","modified_gmt":"2024-01-15T05:18:00","slug":"java%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%a4%8d%e5%88%b6","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%a4%8d%e5%88%b6\/","title":{"rendered":"Java\u5b57\u7b26\u4e32\u590d\u5236"},"content":{"rendered":"

\u524d\u6bb5\u65f6\u95f4\uff0c\u6709\u4eba\u95ee\u6211\u5982\u4f55\u5728Java\u4e2d\u590d\u5236\u5b57\u7b26\u4e32\u3002\u6211\u4eec\u77e5\u9053\u5b57\u7b26\u4e32\u662f\u4e0d\u53ef\u53d8\u5bf9\u8c61\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5c06\u4e00\u4e2a\u5b57\u7b26\u4e32\u8d4b\u503c\u7ed9\u53e6\u4e00\u4e2a\u5b57\u7b26\u4e32\u6765\u590d\u5236\u5b83\u3002\u5982\u679c\u539f\u59cb\u5b57\u7b26\u4e32\u7684\u503c\u53d1\u751f\u53d8\u5316\uff0c\u7531\u4e8e\u4e0d\u53ef\u53d8\u6027\uff0c\u65b0\u5b57\u7b26\u4e32\u7684\u503c\u4e0d\u4f1a\u6539\u53d8\u3002<\/p>\n

Java\u5b57\u7b26\u4e32\u590d\u5236<\/h2>\n

\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u77ed\u7684Java\u5b57\u7b26\u4e32\u590d\u5236\u7a0b\u5e8f\uff0c\u4ee5\u5c55\u793a\u8fd9\u79cd\u884c\u4e3a\u3002<\/p>\n

package com.Olivia.string;\r\n\r\npublic class JavaStringCopy {\r\n\r\n\tpublic static void main(String args[]) {\r\n\t\tString str = \"abc\";\r\n\r\n\t\tString strCopy = str;\r\n\r\n\t\tstr = \"def\";\r\n\t\tSystem.out.println(strCopy); \/\/ prints \"abc\"\r\n\r\n\t}\r\n}\r\n<\/code><\/pre>\n
\u8bf7\u6ce8\u610f\uff0c\u6211\u4eec\u53ef\u4ee5\u5bf9\u4efb\u4f55\u4e0d\u53ef\u53d8\u5bf9\u8c61\u6267\u884c\u76f4\u63a5\u8d4b\u503c\u7684\u64cd\u4f5c\uff0c\u800c\u4e0d\u4ec5\u4ec5\u5c40\u9650\u4e8eString\u5bf9\u8c61\u3002\u7136\u800c\uff0c\u5982\u679c\u60a8\u60f3\u5c06\u4e00\u4e2a\u53ef\u53d8\u5bf9\u8c61\u590d\u5236\u7ed9\u53e6\u4e00\u4e2a\u53d8\u91cf\uff0c\u60a8\u5e94\u8be5\u8fdb\u884c\u6df1\u5ea6\u590d\u5236\u3002<\/p>\n
Java\u5b57\u7b26\u4e32\u590d\u5236\u7684\u66ff\u4ee3\u65b9\u6cd5<\/h2>\n
\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e9b\u529f\u80fd\u6765\u590d\u5236\u5b57\u7b26\u4e32\uff0c\u4f46\u662f\u5f53\u4f60\u53ef\u4ee5\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26\u5b89\u5168\u5730\u590d\u5236\u5b57\u7b26\u4e32\u65f6\uff0c\u4f7f\u7528\u8fd9\u4e9b\u529f\u80fd\u662f\u4e0d\u5b9e\u9645\u7684\u3002<\/p>\n
    \n
  1. \n
      \u5229\u7528String.valueOf()\u65b9\u6cd5<\/ol>\n<\/li>\n<\/ol>\n
       <\/p>\n
        \n
      1. \n
          String strCopy = String.valueOf(str);<\/ol>\n<\/li>\n<\/ol>\n
          String strCopy1 = String.valueOf(str.toCharArray(), 0, str.length()); \/\/ \u8fc7\u4e8e\u590d\u6742\u4e24\u500d<\/p>\n
          \u5229\u7528String.copyValueOf()\u65b9\u6cd5\uff0c\u5b8c\u5168\u8fc7\u5ea6\u4f7f\u7528\u4f46\u662f\u53ef\u884c
          \nString strCopy = String.copyValueOf(str.toCharArray());<\/p>\n
          String strCopy1 = String.copyValueOf(str.toCharArray(), 0, str.length()); \/\/ \u8fc7\u4e8e\u590d\u6742\u4e24\u500d<\/p>\n
          \u5982\u679c\u4f60\u60f3\u8981\u5c06\u5b57\u7b26\u4e32\u7684\u4e00\u90e8\u5206\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u5b57\u7b26\u4e32\u4e2d\uff0c\u90a3\u4e48valueOf\u548ccopyValueOf\u65b9\u6cd5\u975e\u5e38\u6709\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
          \u524d\u6bb5\u65f6\u95f4\uff0c\u6709\u4eba\u95ee\u6211\u5982\u4f55\u5728Java\u4e2d\u590d\u5236\u5b57\u7b26\u4e32\u3002\u6211\u4eec\u77e5\u9053\u5b57\u7b26\u4e32\u662f\u4e0d\u53ef\u53d8\u5bf9\u8c61\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5c06\u4e00\u4e2a\u5b57\u7b26\u4e32\u8d4b\u503c\u7ed9\u53e6 […]<\/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-50720","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nJava\u5b57\u7b26\u4e32\u590d\u5236 - 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\/zh\/blog\/java\u5b57\u7b26\u4e32\u590d\u5236\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Java\u5b57\u7b26\u4e32\u590d\u5236\" \/>\n<meta property=\"og:description\" content=\"\u524d\u6bb5\u65f6\u95f4\uff0c\u6709\u4eba\u95ee\u6211\u5982\u4f55\u5728Java\u4e2d\u590d\u5236\u5b57\u7b26\u4e32\u3002\u6211\u4eec\u77e5\u9053\u5b57\u7b26\u4e32\u662f\u4e0d\u53ef\u53d8\u5bf9\u8c61\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5c06\u4e00\u4e2a\u5b57\u7b26\u4e32\u8d4b\u503c\u7ed9\u53e6 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/java\u5b57\u7b26\u4e32\u590d\u5236\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-05-19T07:01:40+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-01-15T05:18:00+00:00\" \/>\n<meta name=\"author\" content=\"\u97f5, \u79d1\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u97f5, \u79d1\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%a4%8d%e5%88%b6\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%a4%8d%e5%88%b6\/\",\"name\":\"Java\u5b57\u7b26\u4e32\u590d\u5236 - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\"},\"datePublished\":\"2023-05-19T07:01:40+00:00\",\"dateModified\":\"2024-01-15T05:18:00+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/6530331a63adef3b3443a1fab53a0e6e\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%a4%8d%e5%88%b6\/#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%a4%8d%e5%88%b6\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%a4%8d%e5%88%b6\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.silicloud.com\/zh\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Java\u5b57\u7b26\u4e32\u590d\u5236\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/\",\"name\":\"Blog - Silicon Cloud\",\"description\":\"\",\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/6530331a63adef3b3443a1fab53a0e6e\",\"name\":\"\u97f5, \u79d1\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/429ccb39b3fff5188bc17986222cfb0936cbadb8cc933cff04ab5ca01bd30a08?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/429ccb39b3fff5188bc17986222cfb0936cbadb8cc933cff04ab5ca01bd30a08?s=96&d=mm&r=g\",\"caption\":\"\u97f5, \u79d1\"},\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/author\/yunke\/\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%a4%8d%e5%88%b6\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Java\u5b57\u7b26\u4e32\u590d\u5236 - 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\/zh\/blog\/java\u5b57\u7b26\u4e32\u590d\u5236\/","og_locale":"zh_CN","og_type":"article","og_title":"Java\u5b57\u7b26\u4e32\u590d\u5236","og_description":"\u524d\u6bb5\u65f6\u95f4\uff0c\u6709\u4eba\u95ee\u6211\u5982\u4f55\u5728Java\u4e2d\u590d\u5236\u5b57\u7b26\u4e32\u3002\u6211\u4eec\u77e5\u9053\u5b57\u7b26\u4e32\u662f\u4e0d\u53ef\u53d8\u5bf9\u8c61\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5c06\u4e00\u4e2a\u5b57\u7b26\u4e32\u8d4b\u503c\u7ed9\u53e6 […]","og_url":"https:\/\/www.silicloud.com\/zh\/blog\/java\u5b57\u7b26\u4e32\u590d\u5236\/","og_site_name":"Blog - Silicon Cloud","article_published_time":"2023-05-19T07:01:40+00:00","article_modified_time":"2024-01-15T05:18:00+00:00","author":"\u97f5, \u79d1","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"\u97f5, \u79d1"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%a4%8d%e5%88%b6\/","url":"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%a4%8d%e5%88%b6\/","name":"Java\u5b57\u7b26\u4e32\u590d\u5236 - Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website"},"datePublished":"2023-05-19T07:01:40+00:00","dateModified":"2024-01-15T05:18:00+00:00","author":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/6530331a63adef3b3443a1fab53a0e6e"},"breadcrumb":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%a4%8d%e5%88%b6\/#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/zh\/blog\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%a4%8d%e5%88%b6\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%a4%8d%e5%88%b6\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.silicloud.com\/zh\/blog\/"},{"@type":"ListItem","position":2,"name":"Java\u5b57\u7b26\u4e32\u590d\u5236"}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website","url":"https:\/\/www.silicloud.com\/zh\/blog\/","name":"Blog - Silicon Cloud","description":"","inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/6530331a63adef3b3443a1fab53a0e6e","name":"\u97f5, \u79d1","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/429ccb39b3fff5188bc17986222cfb0936cbadb8cc933cff04ab5ca01bd30a08?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/429ccb39b3fff5188bc17986222cfb0936cbadb8cc933cff04ab5ca01bd30a08?s=96&d=mm&r=g","caption":"\u97f5, \u79d1"},"url":"https:\/\/www.silicloud.com\/zh\/blog\/author\/yunke\/"},{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/java%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%a4%8d%e5%88%b6\/#local-main-organization-logo","url":"","contentUrl":"","caption":"Blog - Silicon Cloud"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/50720","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/comments?post=50720"}],"version-history":[{"count":2,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/50720\/revisions"}],"predecessor-version":[{"id":59813,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/50720\/revisions\/59813"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/media?parent=50720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/categories?post=50720"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/tags?post=50720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}