diff --git a/hexagonal-example/src/main/java/com/baeldung/hexagonalPattern/core/domain/Book.java b/hexagonal-example/src/main/java/com/baeldung/hexagonalPattern/core/domain/Book.java
deleted file mode 100644
index 9551d0f09d..0000000000
--- a/hexagonal-example/src/main/java/com/baeldung/hexagonalPattern/core/domain/Book.java
+++ /dev/null
@@ -1,33 +0,0 @@
-package com.baeldung.hexagonalPattern.core.domain;
-
-public class Book {
-
-    private String name;
-    private String author_list;
-    private String isbn13;
-
-    /* constructors and getter and setters */
-    public Book(String string, String string2, String string3) {
-	// TODO Auto-generated constructor stub
-    }
-
-    public Book() {
-	// TODO Auto-generated constructor stub
-    }
-
-    /*
-     * public String getName() { return name; }
-     * 
-     * public void setName(String name) { this.name = name; }
-     * 
-     * public String getAuthor_list() { return author_list; }
-     * 
-     * public void setAuthor_list(String author_list) { this.author_list =
-     * author_list; }
-     * 
-     * public String getIsbn13() { return isbn13; }
-     * 
-     * public void setIsbn13(String isbn13) { this.isbn13 = isbn13; }
-     */
-
-}