diff --git a/src/main/java/guru/springframework/spring5webapp/domain/Author.java b/src/main/java/guru/springframework/spring5webapp/domain/Author.java
new file mode 100644
index 0000000000..118329aee0
--- /dev/null
+++ b/src/main/java/guru/springframework/spring5webapp/domain/Author.java
@@ -0,0 +1,79 @@
+package guru.springframework.spring5webapp.domain;
+
+import javax.persistence.*;
+import java.util.Set;
+
+@Entity
+public class Author {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long id;
+    private String firstName;
+    private String lastName;
+
+    @ManyToMany(mappedBy = "authors")
+    private Set<Book> books;
+
+    public Set<Book> getBooks() {
+        return books;
+    }
+
+    public void setBooks(Set<Book> books) {
+        this.books = books;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    @Override
+    public String toString() {
+        return "Author{" +
+                "id=" + id +
+                ", firstName='" + firstName + '\'' +
+                ", lastName='" + lastName + '\'' +
+                ", books=" + books +
+                '}';
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        Author author = (Author) o;
+        return id == author.id;
+    }
+
+    @Override
+    public int hashCode() {
+        return Long.hashCode(id);
+    }
+}
+
+
+
+
+
+
+
diff --git a/src/main/java/guru/springframework/spring5webapp/domain/Book.java b/src/main/java/guru/springframework/spring5webapp/domain/Book.java
new file mode 100644
index 0000000000..26a67f2d29
--- /dev/null
+++ b/src/main/java/guru/springframework/spring5webapp/domain/Book.java
@@ -0,0 +1,81 @@
+package guru.springframework.spring5webapp.domain;
+
+import javax.persistence.*;
+import java.util.Set;
+
+@Entity
+public class Book {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long id;
+    private String title;
+    private String isbn;
+
+    @ManyToMany(mappedBy = "books")
+    @JoinTable(name = "author_book", joinColumns = @JoinColumn(name = "book_id"), inverseJoinColumns = @JoinColumn(name = "author_id"))
+    private Set<Author> authors;
+
+    public Set<Author> getAuthors() {
+        return authors;
+    }
+
+    public void setAuthors(Set<Author> authors) {
+        this.authors = authors;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getIsbn() {
+        return isbn;
+    }
+
+    public void setIsbn(String isbn) {
+        this.isbn = isbn;
+    }
+
+    @Override
+    public String toString() {
+        return "Book{" +
+                "id=" + id +
+                ", title='" + title + '\'' +
+                ", isbn='" + isbn + '\'' +
+                ", authors=" + authors +
+                '}';
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        Book book = (Book) o;
+        return id == book.id;
+    }
+
+    @Override
+    public int hashCode() {
+        return Long.hashCode(id);
+    }
+}
+
+
+
+
+
+
+
+