Ejemplo sin ocp siguiendo el ejemplo del srp de la libreria

Author: simonguzman

Roadmap/27 - SOLID OCP/java/simonguzman.java

@@ -0,0 +1,45 @@
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class simonguzman {
+    public static void main(String[] args) {
+        libraryViolationOcp();
+    }
+
+    /*************************** Ejemplo sin ocp(Incorrecto) ***************************/
+    static void libraryViolationOcp(){
+        Library library = new Library();
+        library.registerBook("El quijote");
+        library.registerUser("Juan Perez");
+        library.loanBook("El quijote", "Juan Perez");
+        library.returnBook("El quijote", "Juan Perez");
+    }
+
+    static class Library{
+        private List<String> books = new ArrayList<>();
+        private List<String> users = new ArrayList<>();
+
+        public void registerBook(String book){
+            books.add(book);
+            System.out.println("Libro registrado: " + book);
+        }
+
+        public void registerUser(String user){
+            users.add(user);
+            System.out.println("Usuario registrado: "+user);
+        }
+
+        public void loanBook(String book, String user){
+            if(books.contains(book)){
+                System.out.println("Libro: " + book + " prestado a " + user);
+            }else{
+                System.out.println("El libro no esta disponible");
+            }
+        }
+
+        public void returnBook(String book, String user){
+            System.out.println("Libro: " + book + " devuelto por " + user);
+        }
+    }
+}