Merge pull request #7185 from Josegs95/main

#30 - Java

Roadmap/30 - SOLID DIP/java/Josegs95.java

@@ -0,0 +1,92 @@
+public class Josegs95 {
+    public static void main(String[] args) {
+        //Ejericio
+        //Forma incorrecta
+        WrongLaptop laptop1 = new WrongLaptop(new ExternalBattery());
+        laptop1.charge();
+
+        //Forma correcta
+        Laptop laptop2 = new Laptop(new ExternalBattery());
+        laptop2.charge();
+
+        laptop2 = new Laptop(new InternalBattery());
+        laptop2.charge();
+
+        //Reto
+        new Josegs95().retoFinal();
+    }
+
+    public void retoFinal(){
+        Notification notification = new Notification();
+        notification.sendNotification("Jose", "Hola", new Email());
+        notification.sendNotification("Laura", "Buenas tardes", new PUSH());
+        notification.sendNotification("Yolanda", "Adios", new SMS());
+    }
+
+    //Forma incorrecta
+    public static class WrongLaptop {
+        private ExternalBattery battery;
+        public WrongLaptop(ExternalBattery battery){
+            this.battery = battery;
+        }
+
+        public void charge(){
+            battery.charge();
+        }
+    }
+    //Forma correcta
+    public interface Battery{
+        public void charge();
+    }
+    public static class ExternalBattery implements Battery{
+        @Override
+        public void charge(){
+            System.out.println("La batería se carga mediante un transformador");
+        }
+    }
+    public static class InternalBattery implements Battery{
+
+        @Override
+        public void charge() {
+            System.out.println("La batería se carga sin necesidad de un transformador");
+        }
+    }
+    public static class Laptop{
+        private Battery battery;
+
+        public Laptop(Battery battery){
+            this.battery = battery;
+        }
+
+        public void charge(){
+            battery.charge();
+        }
+    }
+    //Reto
+    public interface MessageSender{
+        public void send(String recipient, String text);
+    }
+    public class Email implements MessageSender{
+        @Override
+        public void send(String recipient, String text) {
+            System.out.println("\"" + text + "\" enviado por email a " + recipient);
+        }
+    }
+    public class PUSH implements MessageSender{
+        @Override
+        public void send(String recipient, String text) {
+            System.out.println("\"" + text + "\" enviado por push a " + recipient);
+        }
+    }
+    public class SMS implements MessageSender{
+        @Override
+        public void send(String recipient, String text) {
+            System.out.println("\"" + text + "\" enviado por SMS a " + recipient);
+        }
+    }
+    public class Notification{
+        public void sendNotification(String recipient, String text, MessageSender sender){
+            sender.send(recipient, text);
+        }
+    }
+}