{"id":308186,"date":"2024-05-20T20:55:18","date_gmt":"2024-05-20T12:55:18","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/308186.html"},"modified":"2024-05-20T20:55:40","modified_gmt":"2024-05-20T12:55:40","slug":"string%e5%af%b9%e8%b1%a1%e7%9a%84%e4%bc%a0%e9%80%92%e9%97%ae%e9%a2%98%ef%bc%8c%e4%b8%ba%e4%bb%80%e4%b9%88%e4%bc%a0%e7%bb%99change%e7%9a%84str%e6%b2%a1%e6%9c%89%e4%bf%ae%e6%94%b9","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/308186.html","title":{"rendered":"String\u5bf9\u8c61\u7684\u4f20\u9012\u95ee\u9898\uff0c\u4e3a\u4ec0\u4e48\u4f20\u7ed9change\u7684str\u6ca1\u6709\u4fee\u6539"},"content":{"rendered":"

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\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

1. \u4e3a\u4ec0\u4e48\u5728\u4f20\u9012String\u5bf9\u8c61\u65f6\uff0cchange\u65b9\u6cd5\u65e0\u6cd5\u4fee\u6539\u539f\u59cb\u503c?<\/strong><\/p>\n

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2. \u5982\u4f55\u4fee\u6539\u4f20\u9012\u7ed9change\u65b9\u6cd5\u7684String\u5bf9\u8c61\u7684\u503c?<\/strong><\/p>\n

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\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n

public static void change(StringBuilder sb) {\n    sb.append(" World");\n}\n\npublic static void mAI<\/a>n(String[] args) {\n    StringBuilder sb = new StringBuilder("Hello");\n    change(sb);\n    System.out.println(sb.toString()); \/\/ \u8f93\u51fa "Hello World"\n}\n<\/code><\/pre>\n
3. \u6709\u6ca1\u6709\u5176\u4ed6\u65b9\u6cd5\u53ef\u4ee5\u6539\u53d8\u4f20\u9012\u7ed9change\u65b9\u6cd5\u7684String\u5bf9\u8c61\u7684\u503c?<\/strong><\/p>\n
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\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
public static void change(char[] arr) {\n    arr[0] = 'H';\n    arr[1] = 'e';\n    arr[2] = 'l';\n    arr[3] = 'l';\n    arr[4] = 'o';\n}\n\npublic static void main(String[] args) {\n    String str = "world";\n    char[] arr = str.toCharArray();\n    change(arr);\n    String modifiedStr = new String(arr);\n    System.out.println(modifiedStr); \/\/ \u8f93\u51fa "Hello"\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"\u5728Java\u4e2d\uff0c\u5b57\u7b26\u4e32\u7684\u4f20\u9012\u8868\u9762\u4e0a\u770b\u4f3c\u53ef\u4ee5\u4fee\u6539\uff0c\u4f46\u5b9e\u9645\u4e0aString\u5bf9\u8c61\u662f\u4e0d\u53ef\u53d8\u7684\u3001\u4f20\u9012\u7684\u662f\u503c\u7684\u62f7\u8d1d\u3001JVM\u5bf9S […]","protected":false},"author":3,"featured_media":308216,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/308186"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=308186"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/308186\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/308216"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=308186"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=308186"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=308186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}