diff --git a/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/biredirectional/Course.java b/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/biredirectional/Course.java
index aadc08c090..52d01c027c 100644
--- a/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/biredirectional/Course.java
+++ b/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/biredirectional/Course.java
@@ -16,9 +16,27 @@ public class Course {
         inverseJoinColumns = @JoinColumn(name = "student_id"))
     private List<Student> students;
     
-       public List<Student> getStudents() {
+    public List<Student> getStudents() {
         return students;
     }
  
-    //getters and setters
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public void setStudents(List<Student> students) {
+        this.students = students;
+    }
 }
diff --git a/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/biredirectional/Employee.java b/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/biredirectional/Employee.java
index 92514b9b8c..1e04379ae2 100644
--- a/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/biredirectional/Employee.java
+++ b/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/biredirectional/Employee.java
@@ -15,5 +15,28 @@ public class Employee {
     @JoinColumn(name = "department_id")
     private Department department;
  
-    //getters and setters
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Department getDepartment() {
+        return department;
+    }
+
+    public void setDepartment(Department department) {
+        this.department = department;
+    }
 }
diff --git a/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/biredirectional/Student.java b/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/biredirectional/Student.java
index a494f2475f..81e608f88e 100644
--- a/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/biredirectional/Student.java
+++ b/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/biredirectional/Student.java
@@ -14,7 +14,30 @@ public class Student {
  
     @ManyToMany(mappedBy = "students")
     private List<Course> courses;
- 
-    // getters and setters
+
+    
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public List<Course> getCourses() {
+        return courses;
+    }
+
+    public void setCourses(List<Course> courses) {
+        this.courses = courses;
+    }
 }
 
diff --git a/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/unidirectional/Author.java b/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/unidirectional/Author.java
index 6a106071a1..7e023683dc 100644
--- a/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/unidirectional/Author.java
+++ b/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/unidirectional/Author.java
@@ -14,4 +14,27 @@ public class Author {
     @ManyToMany(fetch = FetchType.LAZY, mappedBy = "authors")
     private Set<Book> books;
 
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Set<Book> getBooks() {
+        return books;
+    }
+
+    public void setBooks(Set<Book> books) {
+        this.books = books;
+    }
 }
diff --git a/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/unidirectional/Book.java b/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/unidirectional/Book.java
index 1467a819a0..25b192fb6b 100644
--- a/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/unidirectional/Book.java
+++ b/persistence-modules/hibernate-mapping-2/src/main/java/com/baeldung/associations/unidirectional/Book.java
@@ -1,4 +1,5 @@
 package com.baeldung.associations.unidirectional;
+
 import jakarta.persistence.*;
 import java.util.Set;
 
@@ -17,4 +18,27 @@ public class Book {
             inverseJoinColumns = @JoinColumn(name = "author_id"))
     private Set<Author> 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 Set<Author> getAuthors() {
+        return authors;
+    }
+
+    public void setAuthors(Set<Author> authors) {
+        this.authors = authors;
+    }
 }