{"id":21353,"date":"2024-03-15T21:56:58","date_gmt":"2024-03-15T21:56:58","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-can-java-dynamically-pass-in-the-generic-type-t\/"},"modified":"2024-03-21T20:16:59","modified_gmt":"2024-03-21T20:16:59","slug":"how-can-java-dynamically-pass-in-the-generic-type-t","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-can-java-dynamically-pass-in-the-generic-type-t\/","title":{"rendered":"How can Java dynamically pass in the generic type T?"},"content":{"rendered":"<p>In Java, it is not possible to directly pass in generic parameter T dynamically. T is determined at compile time and cannot be passed dynamically at runtime.<\/p>\n<p>However, a similar effect can be achieved by defining generic parameters in methods or classes. For example:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">MyGenericClass<\/span>&lt;T&gt; {\r\n    <span class=\"hljs-keyword\">private<\/span> T value;\r\n\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">setValue<\/span><span class=\"hljs-params\">(T value)<\/span> {\r\n        <span class=\"hljs-built_in\">this<\/span>.value = value;\r\n    }\r\n\r\n    <span class=\"hljs-keyword\">public<\/span> T <span class=\"hljs-title function_\">getValue<\/span><span class=\"hljs-params\">()<\/span> {\r\n        <span class=\"hljs-keyword\">return<\/span> value;\r\n    }\r\n}\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    <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> {\r\n        MyGenericClass&lt;String&gt; myString = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">MyGenericClass<\/span>&lt;&gt;();\r\n        myString.setValue(<span class=\"hljs-string\">\"Hello\"<\/span>);\r\n        System.out.println(myString.getValue()); <span class=\"hljs-comment\">\/\/ \u8f93\u51fa: Hello<\/span>\r\n\r\n        MyGenericClass&lt;Integer&gt; myInteger = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">MyGenericClass<\/span>&lt;&gt;();\r\n        myInteger.setValue(<span class=\"hljs-number\">123<\/span>);\r\n        System.out.println(myInteger.getValue()); <span class=\"hljs-comment\">\/\/ \u8f93\u51fa: 123<\/span>\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>In the example above, by defining a generic parameter T in the MyGenericClass class, different types can be dynamically passed in while maintaining type safety.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In Java, it is not possible to directly pass in generic parameter T dynamically. T is determined at compile time and cannot be passed dynamically at runtime. However, a similar effect can be achieved by defining generic parameters in methods or classes. For example: public class MyGenericClass&lt;T&gt; { private T value; public void setValue(T value) [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-21353","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>How can Java dynamically pass in the generic type T? - 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\/blog\/how-can-java-dynamically-pass-in-the-generic-type-t\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How can Java dynamically pass in the generic type T?\" \/>\n<meta property=\"og:description\" content=\"In Java, it is not possible to directly pass in generic parameter T dynamically. T is determined at compile time and cannot be passed dynamically at runtime. However, a similar effect can be achieved by defining generic parameters in methods or classes. 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