Nicolai Klokmose

src/main/java/com/booleanuk/core/Article.java

@@ -1,35 +1,24 @@
 package com.booleanuk.core;
 
-public class Article {
-    String title;
-
+public class Article extends Item {
+    protected String title;
+    protected Author author;
     boolean onLoan = false;
 
     public Article(String title) {
-        this.title = title;
+        super(title);
     }
 
-    public boolean isOnLoan() {
-        return onLoan;
+    public Article(String title, Author author) {
+        super(title);
+        this.setAuthor(author);
     }
 
-    public String checkIn() {
-        if (!this.isOnLoan()) {
-            return "item is not currently on loan";
-        }
-
-        this.onLoan = false;
-
-        return "item has been checked in";
+    public Author getAuthor() {
+        return author;
     }
 
-    public String checkOut() {
-        if (this.isOnLoan()) {
-            return "item is currently on loan";
-        }
-
-        this.onLoan = true;
-
-        return "item has been checked out";
+    public void setAuthor(Author author) {
+        this.author = author;
     }
 }

src/main/java/com/booleanuk/core/Author.java

@@ -0,0 +1,37 @@
+package com.booleanuk.core;
+
+public class Author {
+    private String name;
+    private int phoneNumber;
+    private String http;
+
+    public Author(String name, int phoneNumber, String http) {
+        this.setName(name);
+        this.setPhoneNumber(phoneNumber);
+        this.setHttp(http);
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public int getPhoneNumber() {
+        return phoneNumber;
+    }
+
+    public void setPhoneNumber(int phoneNumber) {
+        this.phoneNumber = phoneNumber;
+    }
+
+    public String getHttp() {
+        return http;
+    }
+
+    public void setHttp(String http) {
+        this.http = http;
+    }
+}

src/main/java/com/booleanuk/core/Book.java

@@ -1,35 +1,24 @@
 package com.booleanuk.core;
 
-public class Book {
-    String title;
-
+public class Book extends Item {
+    protected String title;
+    protected Author author;
     boolean onLoan = false;
 
     public Book(String title) {
-        this.title = title;
+        super(title);
     }
 
-    public boolean isOnLoan() {
-        return onLoan;
+    public Book(String title, Author author) {
+        super(title);
+        this.setAuthor(author);
     }
 
-    public String checkIn() {
-        if (!this.isOnLoan()) {
-            return "item is not currently on loan";
-        }
-
-        this.onLoan = false;
-
-        return "item has been checked in";
+    public Author getAuthor() {
+        return author;
     }
 
-    public String checkOut() {
-        if (this.isOnLoan()) {
-            return "item is currently on loan";
-        }
-
-        this.onLoan = true;
-
-        return "item has been checked out";
+    public void setAuthor(Author author) {
+        this.author = author;
     }
 }

src/main/java/com/booleanuk/core/Item.java

@@ -0,0 +1,31 @@
+package com.booleanuk.core;
+
+public abstract class Item {
+    String title;
+
+    boolean onLoan = false;
+
+    public Item(String title) {
+        this.title = title;
+    }
+
+    public boolean isOnLoan() {
+        return onLoan;
+    }
+
+    public String checkIn() {
+        if (!this.isOnLoan()) {
+            return "item is not currently on loan";
+        }
+        this.onLoan = false;
+        return "item has been checked in";
+    }
+
+    public String checkOut() {
+        if (this.isOnLoan()) {
+            return "item is currently on loan";
+        }
+        this.onLoan = true;
+        return "item has been checked out";
+    }
+}

src/main/java/com/booleanuk/core/Library.java

@@ -1,29 +1,24 @@
 package com.booleanuk.core;
 
+import java.util.ArrayList;
 import java.util.List;
 
 public class Library {
-    List<Article> articles;
-    List<Book> books;
-    List<Newspaper> newspapers;
+    List<Item> items;
 
-    public void addToStock(Article item) {
-        this.articles.add(item);
+    public Library() {
+        this.items = new ArrayList<>();
     }
 
-    public void addToStock(Book item) {
-        this.books.add(item);
-    }
-
-    public void addToStock(Newspaper item) {
-        this.newspapers.add(item);
+    public void addToStock(Item item) {
+        this.items.add(item);
     }
 
     // The following methods may contain code that you are unfamiliar with. The strange syntax of article -> something
     // is called a lambda expression (https://www.w3schools.com/java/java_lambda.asp)
     public String checkInArticle(String title) {
-        List<Article> filtered = this.articles.stream()
-                .filter(article -> article.title.equals(title))
+        List<Item> filtered = this.items.stream()
+                .filter(item -> item.title.equals(title))
                 .toList();
 
         if (filtered.size() < 1) {
@@ -34,56 +29,8 @@ public String checkInArticle(String title) {
     }
 
     public String checkOutArticle(String title) {
-        List<Article> filtered = this.articles.stream()
-                .filter(article -> article.title.equals(title))
-                .toList();
-
-        if (filtered.size() < 1) {
-            return "item is not part of the library's collection";
-        }
-
-        return filtered.get(0).checkOut();
-    }
-
-    public String checkInBook(String title) {
-        List<Book> filtered = this.books.stream()
-                .filter(book -> book.title.equals(title))
-                .toList();
-
-        if (filtered.size() < 1) {
-            return "item is not part of the library's collection";
-        }
-
-        return filtered.get(0).checkIn();
-    }
-
-    public String checkOutBook(String title) {
-        List<Book> filtered = this.books.stream()
-                .filter(book -> book.title.equals(title))
-                .toList();
-
-        if (filtered.size() < 1) {
-            return "item is not part of the library's collection";
-        }
-
-        return filtered.get(0).checkOut();
-    }
-
-    public String checkInNewspaper(String title) {
-        List<Newspaper> filtered = this.newspapers.stream()
-                .filter(newspaper -> newspaper.title.equals(title))
-                .toList();
-
-        if (filtered.size() < 1) {
-            return "item is not part of the library's collection";
-        }
-
-        return filtered.get(0).checkIn();
-    }
-
-    public String checkOutNewspaper(String title) {
-        List<Newspaper> filtered = this.newspapers.stream()
-                .filter(newspaper -> newspaper.title.equals(title))
+        List<Item> filtered = this.items.stream()
+                .filter(item -> item.title.equals(title))
                 .toList();
 
         if (filtered.size() < 1) {

src/main/java/com/booleanuk/core/Main.java

@@ -0,0 +1,38 @@
+package com.booleanuk.core;
+
+public class Main {
+
+    public static void main(String[] args) {
+        Library library = new Library();
+        Author author = new Author("George Lucas", 123456, "www.lol.dk");
+
+        Item item_1 = new Article("sw1");
+        Item item_2 = new Book("sw2");
+        Item item_3 = new Newspaper("sw3");
+        Item item_4 = new Article("sw4");
+
+        Item item_5 = new Article("sw5", author);
+
+        library.addToStock(item_1);
+        library.addToStock(item_2);
+        library.addToStock(item_3);
+        library.addToStock(item_4);
+        library.addToStock(item_5);
+
+        System.out.println(library.checkInArticle("sw1"));
+        System.out.println(library.checkOutArticle("sw1"));
+
+        System.out.println(library.checkInArticle("sw2"));
+        System.out.println(library.checkOutArticle("sw2"));
+
+        System.out.println(library.checkInArticle("sw3"));
+        System.out.println(library.checkOutArticle("sw3"));
+
+        System.out.println(library.checkInArticle("sw4"));
+        System.out.println(library.checkOutArticle("sw4"));
+
+        System.out.println(library.checkInArticle("sw5"));
+        System.out.println(library.checkOutArticle("sw5"));
+
+    }
+}

src/main/java/com/booleanuk/core/Newspaper.java

@@ -1,22 +1,19 @@
 package com.booleanuk.core;
 
-public class Newspaper {
-    String title;
-
+public class Newspaper extends Item {
+    protected String title;
     boolean onLoan = false;
 
     public Newspaper(String title) {
-        this.title = title;
-    }
-
-    public boolean isOnLoan() {
-        return onLoan;
+        super(title);
     }
 
+    @Override
     public String checkIn() {
         return "newspapers are not available for loan";
     }
 
+    @Override
     public String checkOut() {
         return "newspapers are not available for loan";
     }

src/test/java/com/booleanuk/core/ItemTest.java

@@ -0,0 +1,11 @@
+package com.booleanuk.core;
+
+import org.junit.jupiter.api.Test;
+
+public class ItemTest {
+
+    @Test
+    public void testItemClass() {
+
+    }
+}