{"id":78430,"date":"2025-08-28T17:11:42","date_gmt":"2025-08-28T17:11:42","guid":{"rendered":"http:\/\/bangla.sitestree.com\/?p=78430"},"modified":"2025-08-28T17:11:43","modified_gmt":"2025-08-28T17:11:43","slug":"factory-pattern-vs-%f0%9f%8f%ad-abstract-factory-pattern-in-java","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=78430","title":{"rendered":"Factory Pattern vs \ud83c\udfed Abstract Factory Pattern in Java"},"content":{"rendered":"\n

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Abstract Factory Pattern Example in Java<\/strong><\/p>\n\n\n\n

From: AI Tools\/OpenAI\/Chatgpt<\/p>\n\n\n\n

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Perfect \ud83d\udc4d Let me give you a clean, copyright-free Abstract Factory Pattern Java example<\/strong> with explanation.<\/p>\n\n\n\n

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\ud83c\udfed Abstract Factory Pattern Example in Java<\/h1>\n\n\n\n

Problem:<\/h3>\n\n\n\n

We want to create UI components<\/strong> (Button<\/code>, Checkbox<\/code>) for different operating systems<\/strong> (Windows and Mac). The client should be able to request them without worrying about which OS family is used.<\/p>\n\n\n\n

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Step 1: Define Product Interfaces<\/h3>\n\n\n\n
\/\/ Product A\ninterface Button {\n    void paint();\n}\n\n\/\/ Product B\ninterface Checkbox {\n    void check();\n}\n<\/code><\/pre>\n\n\n\n
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Step 2: Create Concrete Products<\/h3>\n\n\n\n
\/\/ Windows Variants\nclass WindowsButton implements Button {\n    public void paint() {\n        System.out.println(\"Rendering a Windows style Button\");\n    }\n}\n\nclass WindowsCheckbox implements Checkbox {\n    public void check() {\n        System.out.println(\"Checking a Windows style Checkbox\");\n    }\n}\n\n\/\/ Mac Variants\nclass MacButton implements Button {\n    public void paint() {\n        System.out.println(\"Rendering a Mac style Button\");\n    }\n}\n\nclass MacCheckbox implements Checkbox {\n    public void check() {\n        System.out.println(\"Checking a Mac style Checkbox\");\n    }\n}\n<\/code><\/pre>\n\n\n\n
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Step 3: Define Abstract Factory<\/h3>\n\n\n\n
interface GUIFactory {\n    Button createButton();\n    Checkbox createCheckbox();\n}\n<\/code><\/pre>\n\n\n\n
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Step 4: Concrete Factories<\/h3>\n\n\n\n
class WindowsFactory implements GUIFactory {\n    public Button createButton() {\n        return new WindowsButton();\n    }\n    public Checkbox createCheckbox() {\n        return new WindowsCheckbox();\n    }\n}\n\nclass MacFactory implements GUIFactory {\n    public Button createButton() {\n        return new MacButton();\n    }\n    public Checkbox createCheckbox() {\n        return new MacCheckbox();\n    }\n}\n<\/code><\/pre>\n\n\n\n
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Step 5: Client Code<\/h3>\n\n\n\n
public class AbstractFactoryDemo {\n    public static void main(String[] args) {\n        \/\/ Choose factory based on OS\n        GUIFactory factory;\n\n        String os = \"Windows\"; \/\/ could be detected dynamically\n\n        if (os.equals(\"Windows\")) {\n            factory = new WindowsFactory();\n        } else {\n            factory = new MacFactory();\n        }\n\n        \/\/ Use factory to create related objects\n        Button button = factory.createButton();\n        Checkbox checkbox = factory.createCheckbox();\n\n        \/\/ Work with products\n        button.paint();\n        checkbox.check();\n    }\n}\n<\/code><\/pre>\n\n\n\n
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\u2705 Output (if OS = Windows)<\/h3>\n\n\n\n
Rendering a Windows style Button\nChecking a Windows style Checkbox\n<\/code><\/pre>\n\n\n\n
\u2705 Output (if OS = Mac)<\/h3>\n\n\n\n
Rendering a Mac style Button\nChecking a Mac style Checkbox\n<\/code><\/pre>\n\n\n\n
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\ud83d\udd11 Key Points:<\/h3>\n\n\n\n