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-Subproject commit 43e557cf39f84ccbf9ca62957def1729424b6502

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-Subproject commit f5f32aff1bd200132cf6f9ca8e55f34bf564f923

README.md

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+# ruanjian
+

src/main/java/ConcreteProductA.java

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-public class ConcreteProductA implements Product {
-    @Override
-    public void operation() {
-        System.out.println("ConcreteProductA operation");
-    }
-}

src/main/java/ConcreteProductB.java

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-public class ConcreteProductB implements Product {
-    @Override
-    public void operation() {
-        System.out.println("ConcreteProductB operation");
-    }
-}

src/main/java/Factory.java

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-public class Factory {
-    public static Product createProduct(String type) {
-        if (type == null) {
-            return null;
-        }
-        if (type.equalsIgnoreCase("A")) {
-            return new ConcreteProductA();
-        } else if (type.equalsIgnoreCase("B")) {
-            return new ConcreteProductB();
-        }
-        return null;
-    }
-}

src/main/java/FactoryTest.java

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-public class FactoryTest {
-    public static void main(String[] args) {
-        // 测试创建ConcreteProductA
-        Product productA = Factory.createProduct("A");
-        System.out.println("创建产品A：");
-        productA.operation();
-        
-        // 测试创建ConcreteProductB
-        Product productB = Factory.createProduct("B");
-        System.out.println("\n创建产品B：");
-        productB.operation();
-        
-        // 测试无效类型
-        Product invalidProduct = Factory.createProduct("C");
-        System.out.println("\n创建无效产品：" + (invalidProduct == null ? "返回null" : "失败"));
-    }
-}

src/main/java/Product.java

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-public interface Product {
-    void operation();
-}