commit 8539647d0a0d8243775ae25f8fc7369ba57a07f2
Author: 刘冬雪 <liudongxue@example.com>
Date:   Sun Oct 26 16:19:31 2025 +0800

    提交所有代码文件

diff --git a/src/main/java/ConcreteProductA.java b/src/main/java/ConcreteProductA.java
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--- /dev/null
+++ b/src/main/java/ConcreteProductA.java
@@ -0,0 +1,12 @@
+package src.main.java;
+
+/**
+ * 具体产品A
+ * 实现产品接口的具体类
+ */
+public class ConcreteProductA implements Product {
+    @Override
+    public void operation() {
+        System.out.println("ConcreteProductA performing operation");
+    }
+}
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diff --git a/src/main/java/ConcreteProductB.java b/src/main/java/ConcreteProductB.java
new file mode 100644
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+++ b/src/main/java/ConcreteProductB.java
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+package src.main.java;
+
+/**
+ * 具体产品B
+ * 实现产品接口的具体类
+ */
+public class ConcreteProductB implements Product {
+    @Override
+    public void operation() {
+        System.out.println("ConcreteProductB performing operation");
+    }
+}
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diff --git a/src/main/java/Factory.java b/src/main/java/Factory.java
new file mode 100644
index 0000000..1c5ffa3
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+++ b/src/main/java/Factory.java
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+package src.main.java;
+
+/**
+ * 工厂类
+ * 根据参数创建不同的具体产品实例
+ */
+public class Factory {
+    /**
+     * 创建产品的静态方法
+     * @param type 产品类型
+     * @return 产品实例
+     */
+    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;
+    }
+}
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diff --git a/src/main/java/FactoryTest.java b/src/main/java/FactoryTest.java
new file mode 100644
index 0000000..4c53dec
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+++ b/src/main/java/FactoryTest.java
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+package src.main.java;
+
+/**
+ * 测试类
+ * 验证简单工厂模式的实现
+ */
+public class FactoryTest {
+    public static void main(String[] args) {
+        // 测试创建ConcreteProductA
+        Product productA = Factory.createProduct("A");
+        System.out.println("Testing Product A:");
+        productA.operation();
+        
+        // 测试创建ConcreteProductB
+        Product productB = Factory.createProduct("B");
+        System.out.println("\nTesting Product B:");
+        productB.operation();
+        
+        // 测试无效类型
+        Product invalidProduct = Factory.createProduct("C");
+        System.out.println("\nTesting Invalid Product:");
+        if (invalidProduct == null) {
+            System.out.println("Invalid product type, returned null");
+        }
+    }
+}
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diff --git a/src/main/java/Product.java b/src/main/java/Product.java
new file mode 100644
index 0000000..b2c7e41
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+++ b/src/main/java/Product.java
@@ -0,0 +1,12 @@
+package src.main.java;
+
+/**
+ * 产品接口
+ * 定义所有产品共有的操作
+ */
+public interface Product {
+    /**
+     * 产品的操作方法
+     */
+    void operation();
+}
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