{"id":20956,"date":"2024-03-15T21:14:39","date_gmt":"2024-03-15T21:14:39","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-run-multiple-classes-in-java\/"},"modified":"2024-03-21T19:19:58","modified_gmt":"2024-03-21T19:19:58","slug":"how-to-run-multiple-classes-in-java","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-run-multiple-classes-in-java\/","title":{"rendered":"How to run multiple classes in Java?"},"content":{"rendered":"<p>In a Java program, multiple classes can exist, but only one class can contain the main method as it serves as the entry point of the program. If you want to run multiple classes, you can create objects of other classes within the main method of the main class and then call their methods. 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_\">MainClass<\/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        <span class=\"hljs-type\">OtherClass<\/span> <span class=\"hljs-variable\">other<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">OtherClass<\/span>();\r\n        other.method();\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_\">OtherClass<\/span> {\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">method<\/span><span class=\"hljs-params\">()<\/span> {\r\n        System.out.println(<span class=\"hljs-string\">\"Hello from OtherClass!\"<\/span>);\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>In the example above, MainClass serves as the main class, which includes the main method. Within the main method, an object of OtherClass called &#8216;other&#8217; is created and its method is invoked. Upon running the MainClass class, the output will be &#8220;Hello from OtherClass!&#8221;.<\/p>\n<p>Note: If other classes are static classes, static methods can be called directly by the class name without needing to create an object.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In a Java program, multiple classes can exist, but only one class can contain the main method as it serves as the entry point of the program. If you want to run multiple classes, you can create objects of other classes within the main method of the main class and then call their methods. For [&hellip;]<\/p>\n","protected":false},"author":11,"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-20956","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 to run multiple classes in Java? - 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-to-run-multiple-classes-in-java\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to run multiple classes in Java?\" \/>\n<meta property=\"og:description\" content=\"In a Java program, multiple classes can exist, but only one class can contain the main method as it serves as the entry point of the program. 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For [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-to-run-multiple-classes-in-java\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-15T21:14:39+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-21T19:19:58+00:00\" \/>\n<meta name=\"author\" content=\"Olivia Parker\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Olivia Parker\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-run-multiple-classes-in-java\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-run-multiple-classes-in-java\/\"},\"author\":{\"name\":\"Olivia Parker\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/3ff7b3da0e45ac5dbbef2502f3cea8d9\"},\"headline\":\"How to run multiple classes in Java?\",\"datePublished\":\"2024-03-15T21:14:39+00:00\",\"dateModified\":\"2024-03-21T19:19:58+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-run-multiple-classes-in-java\/\"},\"wordCount\":130,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-run-multiple-classes-in-java\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-to-run-multiple-classes-in-java\/\",\"name\":\"How to run multiple classes in Java? 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