{"id":15348,"date":"2024-03-15T11:00:56","date_gmt":"2024-03-15T11:00:56","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-can-java-call-a-private-method\/"},"modified":"2025-08-06T17:50:52","modified_gmt":"2025-08-06T17:50:52","slug":"how-can-java-call-a-private-method","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-can-java-call-a-private-method\/","title":{"rendered":"How can Java call a private method?"},"content":{"rendered":"<p>In Java, one can utilize reflection to invoke private methods.<\/p>\n<p>First, you need to obtain the Class object. This can be done by using the Class.forName() method with the fully qualified name of the class, or by simply using the class name followed by .class.<\/p>\n<p>Next, use the getDeclaredMethod() method to obtain the specified method. You need to pass in the method name and parameter types.<\/p>\n<p>Next, in order to access the method, use the setAccessible(true) method to set the accessibility of the method to true, thus allowing access to private methods.<\/p>\n<p>Finally, use the invoke() method to call the method by passing in the object to which it belongs (null for static methods) and any necessary parameters.<\/p>\n<p>Here is an example code:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> java.lang.reflect.Method;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">Main<\/span> {\r\n\r\n    <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">privateMethod<\/span><span class=\"hljs-params\">()<\/span> {\r\n        System.out.println(<span class=\"hljs-string\">\"\u8c03\u7528\u4e86\u79c1\u6709\u65b9\u6cd5\"<\/span>);\r\n    }\r\n\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> <span class=\"hljs-keyword\">throws<\/span> Exception {\r\n        Class&lt;?&gt; clazz = Class.forName(<span class=\"hljs-string\">\"Main\"<\/span>);\r\n        <span class=\"hljs-type\">Method<\/span> <span class=\"hljs-variable\">method<\/span> <span class=\"hljs-operator\">=<\/span> clazz.getDeclaredMethod(<span class=\"hljs-string\">\"privateMethod\"<\/span>);\r\n        method.setAccessible(<span class=\"hljs-literal\">true<\/span>);\r\n        <span class=\"hljs-type\">Main<\/span> <span class=\"hljs-variable\">instance<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Main<\/span>();\r\n        method.invoke(instance);\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>This way, the private method can be successfully invoked.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In Java, one can utilize reflection to invoke private methods. First, you need to obtain the Class object. This can be done by using the Class.forName() method with the fully qualified name of the class, or by simply using the class name followed by .class. Next, use the getDeclaredMethod() method to obtain the specified method. [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[453,1402,299,1404,1403],"class_list":["post-15348","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-development","tag-guide","tag-programming","tag-technology","tag-tutorial"],"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>How can Java call a private method? - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn about how can java call a private method?. Comprehensive guide with examples and best practices.\" \/>\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\/blog\/how-can-java-call-a-private-method\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How can Java call a private method?\" \/>\n<meta property=\"og:description\" content=\"Learn about how can java call a private method?. 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