added lab2 ex1

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 + "')";
+    }
+}