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src/main/java/org/example/Customer.java

+package org.example;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Customer {
+
+    private String name;
+    private String adress; //different type?
+    private String email;
+    private List<Article> likedArticles;
+    private List<Book> likedBooks;
+    private List<Article> readArticles;
+    private List<Book> readBooks;
+    private int bookLikesCount;
+    private int articleLikesCount;
+    private int articleReadCount;
+    private int bookReadCount;
+
+    //Constructer
+    public Customer(String name, String address, String email) {
+        this.name = name;
+        this.adress = address;
+        this.email = email;
+        likedArticles = new ArrayList<>(); //make a list for every customer
+        likedBooks = new ArrayList<>();
+        readArticles = new ArrayList<>();
+        readBooks = new ArrayList<>();
+        bookLikesCount = 0;
+        bookReadCount = 0;
+        articleReadCount = 0;
+        articleLikesCount = 0;
+    }
+    /* make lists to add and store liked or read books and article and increase the number of likes/Read for that book */
+    public void likesArticle(Article obj){
+        likedArticles.add(obj);
+        obj.increaseArticleLikes(obj);
+        articleLikesCount++;
+    }
+    public void likesBook(Book obj){
+        likedBooks.add(obj);
+        obj.increaseBookLikes(obj);
+        bookLikesCount++; //count of liked books per customer,, does it need to be static?, in this case it would be same num for all instances
+    }
+    public void readBook(Book obj){
+        readBooks.add(obj);
+        obj.increaseBookRead(obj);
+        bookReadCount++;
+    }
+    public void readArticle(Article obj){
+        readArticles.add(obj);
+        obj.increaseArticleRead(obj);
+        articleReadCount++;
+    }
+
+    /* return list with the like or read books and article from a customer instance */
+    public List<Article> getLikedArticles() {
+        return likedArticles;
+    }
+
+    public List<Book> getLikedBooks() {
+        return likedBooks;
+    }
+
+    public List<Article> getReadArticles() {
+        return readArticles;
+    }
+
+    public List<Book> getReadBooks() {
+        return readBooks;
+    }
+
+    public int getBookLikesCount() {
+        return bookLikesCount;
+    }
+
+    public int getArticleLikesCount() {
+        return articleLikesCount;
+    }
+
+    public int getArticleReadCount() {
+        return articleReadCount;
+    }
+
+    public int getBookReadCount() {
+        return bookReadCount;
+    }
+
+    @Override
+    public String toString() {
+        return "Customer{" +
+                " name='" + name + '\'' +
+                ", adress='" + adress + '\'' +
+                ", email='" + email + '}';//+ '\'' +
+               // ", likedArticles=" + likedArticles +
+               // ", likedBooks=" + likedBooks +
+               //", readArticles=" + readArticles +
+                //", readBooks=" + readBooks +
+                //", bookLikesCount=" + bookLikesCount +
+                //'}';
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getAdress() {
+        return adress;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+}