added lab2 ex1

src/learn/simple_factory_method/ConcreteCreator.java

@@ -0,0 +1,8 @@
+package learn.simple_factory_method;
+
+public class ConcreteCreator extends Creator {
+    @Override
+    public Product factoryMethod() {
+        return new ConcreteProduct("Product");
+    }
+}

src/learn/simple_factory_method/ConcreteProduct.java

@@ -0,0 +1,14 @@
+package learn.simple_factory_method;
+
+public class ConcreteProduct implements Product {
+    private String category;
+
+    public ConcreteProduct(String category) {
+        this.category = category;
+    }
+
+    @Override
+    public String toString() {
+        return "ConcreteProduct('" + category + "')";
+    }
+}

src/learn/simple_factory_method/Creator.java

@@ -0,0 +1,10 @@
+package learn.simple_factory_method;
+
+public abstract class Creator {
+    abstract public Product factoryMethod();
+
+    public void anOperation() {
+        Product product = this.factoryMethod();
+        System.out.println("Do something with product " + product);
+    }
+}

src/learn/simple_factory_method/Main.java

@@ -0,0 +1,8 @@
+package learn.simple_factory_method;
+
+public class Main {
+    public static void main(String[] args) {
+        Creator creator = new ConcreteCreator();
+        creator.anOperation();
+    }
+}

src/learn/simple_factory_method/Product.java

@@ -0,0 +1,4 @@
+package learn.simple_factory_method;
+
+public interface Product {
+}