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

01-creational/factory-method/PushNotification.java

@@ -1,11 +1,13 @@
 package factorymethod;
 
 public class PushNotification implements Notification {
-    private final String deviceToken;
-    public PushNotification(String deviceToken) { this.deviceToken = deviceToken; }
 
     @Override
-    public void send(String message) {
-        System.out.println("Push -> " + deviceToken + ": " + message);
+    public void send(String recipient, String message) {
+        // In production: use Firebase FCM
+        System.out.printf("  [PUSH]  To: %s | Alert: %s%n", recipient, message);
     }
+
+    @Override
+    public String getType() { return "PUSH"; }
 }