Sync Factory Method, Abstract Factory, Builder, Prototype to Java 25; fix post/code mismatches

01-creational/abstract-factory/Main.java

@@ -1,22 +1,16 @@
 package abstractfactory;
 
+// Entry point: the ONLY place that knows the theme
 public class Main {
     public static void main(String[] args) {
-        System.out.println("=== Abstract Factory Pattern Demo ===\n");
 
-        String os = System.getProperty("os.name", "Windows").toLowerCase();
-        GUIFactory factory = os.contains("mac") ? new MacFactory() : new WindowsFactory();
-
-        System.out.println("Detected OS family: " + (os.contains("mac") ? "Mac" : "Windows"));
-        System.out.println();
+        // Production: read theme from config or OS preference
+        String theme = System.getProperty("app.theme", "light");
+        UIFactory factory = "dark".equals(theme) ? new DarkThemeFactory() : new LightThemeFactory();
 
         Application app = new Application(factory);
+        app.buildUI();
         app.render();
-        app.simulateClick();
-
-        System.out.println("\n--- Forcing Mac UI ---");
-        Application macApp = new Application(new MacFactory());
-        macApp.render();
-        macApp.simulateClick();
+        app.simulateSubmit();
     }
 }