{"id":240,"date":"2023-04-05T12:18:14","date_gmt":"2022-12-09T06:41:11","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/kotlin%e5%8f%af%e8%a7%81%e6%80%a7%e4%bf%ae%e9%a5%b0%e7%ac%a6-%e5%85%ac%e5%85%b1%e7%9a%84%e3%80%81%e5%8f%97%e4%bf%9d%e6%8a%a4%e7%9a%84%e3%80%81%e5%86%85%e9%83%a8%e7%9a%84%e3%80%81%e7%a7%81%e6%9c%89\/"},"modified":"2025-08-01T02:47:36","modified_gmt":"2025-07-31T18:47:36","slug":"kotlin%e5%8f%af%e8%a7%81%e6%80%a7%e4%bf%ae%e9%a5%b0%e7%ac%a6-%e5%85%ac%e5%85%b1%e7%9a%84%e3%80%81%e5%8f%97%e4%bf%9d%e6%8a%a4%e7%9a%84%e3%80%81%e5%86%85%e9%83%a8%e7%9a%84%e3%80%81%e7%a7%81%e6%9c%89","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/kotlin%e5%8f%af%e8%a7%81%e6%80%a7%e4%bf%ae%e9%a5%b0%e7%ac%a6-%e5%85%ac%e5%85%b1%e7%9a%84%e3%80%81%e5%8f%97%e4%bf%9d%e6%8a%a4%e7%9a%84%e3%80%81%e5%86%85%e9%83%a8%e7%9a%84%e3%80%81%e7%a7%81%e6%9c%89\/","title":{"rendered":"Kotlin\u53ef\u89c1\u6027\u4fee\u9970\u7b26\u8be6\u89e3\uff1apublic, protected, internal, private"},"content":{"rendered":"<p><!-- \u8fd9\u662f\u6587\u7ae0\u300aKotlin\u53ef\u89c1\u6027\u4fee\u9970\u7b26 - \u516c\u5171\u7684\u3001\u53d7\u4fdd\u62a4\u7684\u3001\u5185\u90e8\u7684\u3001\u79c1\u6709\u7684\u300b\u7684\u7b2c1\u90e8\u5206\uff08\u51711\u90e8\u5206\uff09\u3002 --><\/p>\n<p>\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u8ba8\u8bbaKotlin\u7f16\u7a0b\u4e2d\u53ef\u7528\u7684\u5404\u79cd\u53ef\u89c1\u6027\u4fee\u9970\u7b26\u3002<\/p>\n<h2>Kotlin\u7684\u53ef\u89c1\u6027\u4fee\u9970\u7b26<\/h2>\n<p>\u53ef\u89c1\u6027\u4fee\u9970\u7b26\u662f\u4e00\u79cd\u4fee\u9970\u7b26\uff0c\u5f53\u9644\u52a0\u5230Kotlin\u4e2d\u7684\u7c7b\/\u63a5\u53e3\/\u5c5e\u6027\/\u51fd\u6570\u4e0a\u65f6\uff0c\u5c06\u5b9a\u4e49\u5176\u53ef\u89c1\u6027\u8303\u56f4\u4ee5\u53ca\u53ef\u4ee5\u4ece\u4f55\u5904\u8fdb\u884c\u8bbf\u95ee\u3002Kotlin\u4e2d\u5c5e\u6027\u7684\u8bbe\u7f6e\u5668\u53ef\u4ee5\u5177\u6709\u4e0d\u540c\u4e8e\u5c5e\u6027\u7684\u4fee\u9970\u7b26\u3002\u83b7\u53d6\u5668\u65e0\u6cd5\u5b9a\u4e49\u53ef\u89c1\u6027\u4fee\u9970\u7b26\uff0c\u5b83\u4eec\u4f7f\u7528\u4e0e\u5c5e\u6027\u76f8\u540c\u7684\u4fee\u9970\u7b26\u3002\u4ee5\u4e0b\u662f\u53ef\u89c1\u6027\u4fee\u9970\u7b26\uff1a<\/p>\n<ul class=\"post-ul\">\n<li><code>public<\/code>\uff08\u516c\u5171\uff09<\/li>\n<li><code>protected<\/code>\uff08\u53d7\u4fdd\u62a4\uff09<\/li>\n<li><code>internal<\/code>\uff08\u5185\u90e8\uff09<\/li>\n<li><code>private<\/code>\uff08\u79c1\u6709\uff09<\/li>\n<\/ul>\n<h3>\u516c\u5171\u4fee\u9970\u7b26\uff08<code>public<\/code>\uff09<\/h3>\n<p>\u5728Kotlin\u4e2d\uff0c<code>public<\/code>\u4fee\u9970\u7b26\u662f\u9ed8\u8ba4\u7684\u4fee\u9970\u7b26\u3002\u5c31\u50cfJava\u4e2d\u7684<code>public<\/code>\u4fee\u9970\u7b26\u4e00\u6837\uff0c\u5b83\u610f\u5473\u7740\u58f0\u660e\u5728\u4efb\u4f55\u5730\u65b9\u90fd\u662f\u53ef\u89c1\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\nclass Hello{\r\n}\r\n\r\npublic class H{\r\n}\r\n\r\nfun hi()\r\npublic fun hello()\r\n\r\nval i = 0\r\npublic val j = 5\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0a\u58f0\u660e\u90fd\u5728\u6587\u4ef6\u7684\u9876\u5c42\u3002\u6240\u6709\u58f0\u660e\u90fd\u662f\u516c\u5171\u7684\u3002\u5982\u679c\u6211\u4eec\u6ca1\u6709\u660e\u786e\u6307\u5b9a\u7c7b\u6210\u5458\u7684\u4fee\u9970\u7b26\uff0c\u5b83\u4eec\u9ed8\u8ba4\u662f\u516c\u5171\u7684\uff08\u9664\u975e\u5b83\u4eec\u88ab\u8986\u76d6\uff09\u3002<\/p>\n<h3>\u53d7\u4fdd\u62a4\u7684\u4fee\u9970\u7b26\uff08<code>protected<\/code>\uff09<\/h3>\n<p>Kotlin\u4e2d\u7684<code>protected<\/code>\u4fee\u9970\u7b26\uff1a\u65e0\u6cd5\u7528\u4e8e\u9876\u5c42\u58f0\u660e\u3002\u5728\u4e00\u4e2a\u7c7b\u4e2d\uff0c\u53d7\u4fdd\u62a4\u7684\u58f0\u660e\u53ea\u80fd\u5728\u5176\u5b50\u7c7b\u4e2d\u8bbf\u95ee\u3002<\/p>\n<pre class=\"post-pre\"><code>open class Pr{\r\n    protected val i = 0\r\n}\r\n\r\nclass Another : Pr(){\r\n\r\n    fun iValue() : Int\r\n    {\r\n        return i\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u9664\u975e\u4f60\u660e\u786e\u5c06\u5176\u4fee\u6539\uff0c\u5426\u5219\u6ca1\u6709\u7ee7\u627f<code>Pr<\/code>\u7c7b\u7684\u7c7b\u65e0\u6cd5\u8bbf\u95ee\u5177\u6709<code>protected<\/code>\u4fee\u9970\u7b26\u7684<code>i<\/code>\u58f0\u660e\uff0c\u5373\u4f7f\u5728\u5b50\u7c7b\u4e2d\u88ab\u91cd\u5199\u65f6\u4e5f\u8981\u4fdd\u6301\u76f8\u540c\u7684<code>protected<\/code>\u4fee\u9970\u7b26\u3002<\/p>\n<pre class=\"post-pre\"><code>open class Pr{\r\n    open protected val i = 0\r\n}\r\n\r\nclass Another : Pr(){\r\n\r\n    fun iValue() : Int\r\n    {\r\n        return i\r\n    }\r\n    \r\n    override val i = 5 \/\/protected visibility\r\n}\r\n<\/code><\/pre>\n<p>\u5728Kotlin\u4e2d\u5b9a\u4e49\u7684<code>protected<\/code>\u4fee\u9970\u7b26\u6982\u5ff5\u4e0eJava\u4e2d\u7684\u6709\u6240\u4e0d\u540c\u3002<\/p>\n<h3>\u5185\u90e8\u4fee\u9970\u7b26\uff08<code>internal<\/code>\uff09<\/h3>\n<p>\u5728Kotlin\u4e2d\uff0c<code>internal<\/code>\u662f\u4e00\u79cd\u65b0\u7684\u4fee\u9970\u7b26\uff0c\u800cJava\u4e2d\u5219\u4e0d\u5b58\u5728\u3002\u5c06\u58f0\u660e\u8bbe\u7f6e\u4e3a<code>internal<\/code>\u610f\u5473\u7740\u5b83\u53ea\u80fd\u5728\u540c\u4e00\u4e2a\u6a21\u5757\u4e2d\u4f7f\u7528\u3002\u5728Kotlin\u4e2d\uff0c\u6211\u4eec\u6240\u8bf4\u7684\u6a21\u5757\u662f\u6307\u4e00\u7ec4\u4e00\u8d77\u7f16\u8bd1\u7684\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>internal class A {\r\n}\r\n\r\ninternal val x = 0\r\n<\/code><\/pre>\n<p>\u5f53\u4f60\u9700\u8981\u5c06\u7279\u5b9a\u7684\u5e93\u5b9e\u73b0\u9690\u85cf\u5728\u7528\u6237\u5916\u90e8\u65f6\uff0c<code>internal<\/code>\u4fee\u9970\u7b26\u975e\u5e38\u6709\u7528\uff0c\u56e0\u4e3a\u5b83\u5bf9\u4e8e\u5f53\u524d\u6a21\u5757\u4e4b\u5916\u662f\u4e0d\u53ef\u89c1\u7684\u3002\u5728Java\u4e2d\uff0c\u4f7f\u7528\u5305\u79c1\u6709\u53ef\u89c1\u6027\u662f\u65e0\u6cd5\u5b9e\u73b0\u8fd9\u79cd\u6548\u679c\u7684\u3002<\/p>\n<h3>\u79c1\u6709\u4fee\u9970\u7b26\uff08<code>private<\/code>\uff09<\/h3>\n<p><code>private<\/code>\u4fee\u9970\u7b26\u4e0d\u5141\u8bb8\u5728\u5f53\u524d\u8303\u56f4\u4e4b\u5916\u7684\u5730\u65b9\u770b\u5230\u58f0\u660e\u3002<\/p>\n<pre class=\"post-pre\"><code>var setterVisibility: String = \"abc\"\r\n    private set\r\n\r\nopen class Pr{\r\n    open protected val i = 0\r\n\r\n    fun iValue() : Int\r\n    {\r\n        \/\/ setterVisibility = 10 \/\/ \u7f16\u8bd1\u9519\u8bef\uff1a\u7c7b\u578b\u4e0d\u5339\u914d\uff0c\u5e94\u4e3aString\r\n        return setterVisibility.length \/\/ \u793a\u4f8b\uff1a\u8fd4\u56de\u5b57\u7b26\u4e32\u957f\u5ea6\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u7531\u4e8eKotlin\u5141\u8bb8\u591a\u4e2a\u9876\u5c42\u5b9a\u4e49\uff0c\u4e0a\u8ff0\u4ee3\u7801\u662f\u6709\u6548\u7684\u3002\u4e0b\u9762\u7684\u4ee3\u7801\u662f\u65e0\u6548\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code>private open class ABC{\r\n    private val x = 6\r\n}\r\n\r\nprivate class BDE : ABC()\r\n{\r\n    fun getX()\r\n    {\r\n        \/\/ return x \/\/ \u7f16\u8bd1\u9519\u8bef\uff1ax\u4e0d\u80fd\u5728\u6b64\u5904\u8bbf\u95ee\uff0c\u56e0\u4e3a\u5b83\u662f\u79c1\u6709\u7684\r\n    }\r\n}\r\n<\/code><\/pre>\n<p><code>x<\/code>\u53ea\u80fd\u4ece\u5b83\u6240\u5c5e\u7684\u7c7b\u5185\u90e8\u770b\u5230\u3002\u6211\u4eec\u53ef\u4ee5\u7528\u4ee5\u4e0b\u65b9\u5f0f\u8bbe\u7f6e\u79c1\u6709\u6784\u9020\u51fd\u6570\uff1a<\/p>\n<pre class=\"post-pre\"><code>class PRIV private constructor(a: String) {\r\n \/\/ ... \r\n}\r\n<\/code><\/pre>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u7c7b\u5177\u6709\u516c\u5171\u7684\u6784\u9020\u51fd\u6570\u3002\u65e0\u8bba\u7c7b\u5728\u54ea\u91cc\uff0c\u6784\u9020\u51fd\u6570\u90fd\u4f1a\u8ddf\u968f\u3002\u6211\u4eec\u9700\u8981\u5728\u5b9a\u4e49\u672c\u8eab\u4e0a\u8bbe\u7f6e\u6784\u9020\u51fd\u6570\u7684\u53ef\u89c1\u6027\u4fee\u9970\u7b26\u3002\u56e0\u6b64\uff0cKotlin\u4e0eJava\u4e0d\u540c\u5730\u4f7f\u7528\u4e86<code>protected<\/code>\u548c<code>internal<\/code>\u4fee\u9970\u7b26\u3002\u53e6\u5916\uff0cJava\u7684\u9ed8\u8ba4\u4fee\u9970\u7b26\u662f<code>package-private<\/code>\uff0c\u5728Kotlin\u4e2d\u4e0d\u5b58\u5728\u3002\u8fd9\u5c31\u7ed3\u675f\u4e86\u6709\u5173Kotlin\u53ef\u89c1\u6027\u4fee\u9970\u7b26\u7684\u5feb\u901f\u6559\u7a0b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u5c06\u8ba8\u8bbaKotlin\u7f16\u7a0b\u4e2d\u53ef\u7528\u7684\u5404\u79cd\u53ef\u89c1\u6027\u4fee\u9970\u7b26\u3002 Kotlin\u7684\u53ef\u89c1\u6027\u4fee\u9970\u7b26 \u53ef\u89c1\u6027\u4fee\u9970\u7b26\u662f\u4e00 [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[897,898,315,899,486],"class_list":["post-240","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-kotlin","tag-898","tag-315","tag-899","tag-486"],"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>Kotlin\u53ef\u89c1\u6027\u4fee\u9970\u7b26\u8be6\u89e3\uff1apublic, protected, internal, private - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u6df1\u5165\u89e3\u6790Kotlin\u4e2d\u56db\u79cd\u53ef\u89c1\u6027\u4fee\u9970\u7b26\uff08public, protected, internal, private\uff09\u7684\u7528\u6cd5\u4e0e\u533a\u522b\uff0c\u5e2e\u52a9\u60a8\u66f4\u597d\u5730\u7406\u89e3\u548c\u638c\u63e1Kotlin\u7684\u8bbf\u95ee\u63a7\u5236\u673a\u5236\uff0c\u63d0\u5347\u4ee3\u7801\u8d28\u91cf\u4e0e\u53ef\u7ef4\u62a4\u6027\u3002\" \/>\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\/kotlin\u53ef\u89c1\u6027\u4fee\u9970\u7b26-\u516c\u5171\u7684\u3001\u53d7\u4fdd\u62a4\u7684\u3001\u5185\u90e8\u7684\u3001\u79c1\u6709\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kotlin\u53ef\u89c1\u6027\u4fee\u9970\u7b26\u8be6\u89e3\uff1apublic, protected, internal, private\" \/>\n<meta property=\"og:description\" content=\"\u6df1\u5165\u89e3\u6790Kotlin\u4e2d\u56db\u79cd\u53ef\u89c1\u6027\u4fee\u9970\u7b26\uff08public, protected, internal, 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