{"id":23311,"date":"2024-03-16T01:09:45","date_gmt":"2024-03-16T01:09:45","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-can-polymorphism-be-achieved-in-java-2\/"},"modified":"2024-03-22T00:57:59","modified_gmt":"2024-03-22T00:57:59","slug":"how-can-polymorphism-be-achieved-in-java-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-can-polymorphism-be-achieved-in-java-2\/","title":{"rendered":"How can polymorphism be achieved in Java?"},"content":{"rendered":"

In Java, polymorphism is achieved through inheritance and method overriding. The specific steps are as follows:<\/p>\n

    \n
  1. Create a base class with one or more methods, ensuring that at least one method is overridden by a subclass.<\/li>\n<\/ol>\n
    public<\/span> class<\/span> Animal<\/span> {\r\n    public<\/span> void<\/span> sound<\/span>()<\/span> {\r\n        System.out.println(\"\u52a8\u7269\u53d1\u51fa\u58f0\u97f3\"<\/span>);\r\n    }\r\n}\r\n<\/code><\/pre>\n
      \n
    1. Create one or more subclasses by inheriting from a base class and overriding its methods.<\/li>\n<\/ol>\n
      public<\/span> class<\/span> Cat<\/span> extends<\/span> Animal<\/span> {\r\n    @Override<\/span>\r\n    public<\/span> void<\/span> sound<\/span>()<\/span> {\r\n        System.out.println(\"\u732b\u53d1\u51fa\u201c\u55b5\u55b5\u201d\u7684\u58f0\u97f3\"<\/span>);\r\n    }\r\n}\r\n\r\npublic<\/span> class<\/span> Dog<\/span> extends<\/span> Animal<\/span> {\r\n    @Override<\/span>\r\n    public<\/span> void<\/span> sound<\/span>()<\/span> {\r\n        System.out.println(\"\u72d7\u53d1\u51fa\u201c\u6c6a\u6c6a\u201d\u7684\u58f0\u97f3\"<\/span>);\r\n    }\r\n}\r\n<\/code><\/pre>\n
        \n
      1. Creating objects and invoking methods: Achieve polymorphism by creating base class objects or subclass objects and calling methods.<\/li>\n<\/ol>\n
        public<\/span> class<\/span> Main<\/span> {\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(String[] args)<\/span> {\r\n        Animal<\/span> animal1<\/span> =<\/span> new<\/span> Animal<\/span>();\r\n        Animal<\/span> animal2<\/span> =<\/span> new<\/span> Cat<\/span>();\r\n        Animal<\/span> animal3<\/span> =<\/span> new<\/span> Dog<\/span>();\r\n\r\n        animal1.sound(); \/\/ \u52a8\u7269\u53d1\u51fa\u58f0\u97f3<\/span>\r\n        animal2.sound(); \/\/ \u732b\u53d1\u51fa\u201c\u55b5\u55b5\u201d\u7684\u58f0\u97f3<\/span>\r\n        animal3.sound(); \/\/ \u72d7\u53d1\u51fa\u201c\u6c6a\u6c6a\u201d\u7684\u58f0\u97f3<\/span>\r\n    }\r\n}\r\n<\/code><\/pre>\n
        In the above code, three objects, animal1, animal2, and animal3, were created using the base class Animal, and the sound() method was called on each object. Animal1 called the method of the base class, while animal2 and animal3 called the overridden methods of the subclasses Cat and Dog, thus achieving polymorphism.<\/p>\n","protected":false},"excerpt":{"rendered":"
        In Java, polymorphism is achieved through inheritance and method overriding. The specific steps are as follows: Create a base class with one or more methods, ensuring that at least one method is overridden by a subclass. public class Animal { public void sound() { System.out.println(“\u52a8\u7269\u53d1\u51fa\u58f0\u97f3”); } } Create one or more subclasses by inheriting from […]<\/p>\n","protected":false},"author":13,"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-23311","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nHow can polymorphism be achieved 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-can-polymorphism-be-achieved-in-java-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How can polymorphism be achieved in Java?\" \/>\n<meta property=\"og:description\" content=\"In Java, polymorphism is achieved through inheritance and method overriding. The specific steps are as follows: Create a base class with one or more methods, ensuring that at least one method is overridden by a subclass. public class Animal { public void sound() { System.out.println("\u52a8\u7269\u53d1\u51fa\u58f0\u97f3"); } } Create one or more subclasses by inheriting from […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-can-polymorphism-be-achieved-in-java-2\/\" \/>\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=\"2024-03-16T01:09:45+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-22T00:57:59+00:00\" \/>\n<meta name=\"author\" content=\"Isabella Edwards\" \/>\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=\"Isabella Edwards\" \/>\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-can-polymorphism-be-achieved-in-java-2\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-can-polymorphism-be-achieved-in-java-2\/\"},\"author\":{\"name\":\"Isabella Edwards\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/5579144e23c225c8188167f3e3f888dd\"},\"headline\":\"How can polymorphism be achieved in Java?\",\"datePublished\":\"2024-03-16T01:09:45+00:00\",\"dateModified\":\"2024-03-22T00:57:59+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-can-polymorphism-be-achieved-in-java-2\/\"},\"wordCount\":127,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-can-polymorphism-be-achieved-in-java-2\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-can-polymorphism-be-achieved-in-java-2\/\",\"name\":\"How can polymorphism be achieved in Java? 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