diff --git a/apache-cxf/cxf-jaxrs-implementation/src/main/java/com/baeldung/cxf/jaxrs/implementation/CourseRepository.java b/apache-cxf/cxf-jaxrs-implementation/src/main/java/com/baeldung/cxf/jaxrs/implementation/CourseRepository.java
new file mode 100644
index 0000000000..a2fd6be435
--- /dev/null
+++ b/apache-cxf/cxf-jaxrs-implementation/src/main/java/com/baeldung/cxf/jaxrs/implementation/CourseRepository.java
@@ -0,0 +1,72 @@
+package com.baeldung.cxf.jaxrs.implementation;
+
+import javax.ws.rs.*;
+import javax.ws.rs.core.Response;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@Path("baeldung")
+@Produces("text/xml")
+public class CourseRepository {
+    private Map<Integer, Course> courses = new HashMap<>();
+
+    {
+        Student student1 = new Student();
+        Student student2 = new Student();
+        student1.setId(1);
+        student1.setName("Student A");
+        student2.setId(2);
+        student2.setName("Student B");
+
+        List<Student> course1Students = new ArrayList<>();
+        course1Students.add(student1);
+        course1Students.add(student2);
+
+        Course course1 = new Course();
+        Course course2 = new Course();
+        course1.setId(1);
+        course1.setName("REST with Spring");
+        course1.setStudents(course1Students);
+        course2.setId(2);
+        course2.setName("Learn Spring Security");
+
+        courses.put(1, course1);
+        courses.put(2, course2);
+    }
+
+    @GET
+    @Path("courses/{courseId}")
+    public Course getCourse(@PathParam("courseId") int courseId) {
+        return findById(courseId);
+    }
+
+    @PUT
+    @Path("courses/{courseId}")
+    public Response updateCourse(@PathParam("courseId") int courseId, Course course) {
+        Course existingCourse = findById(courseId);
+        if (existingCourse == null) {
+            return Response.status(Response.Status.NOT_FOUND).build();
+        }
+        if (existingCourse.equals(course)) {
+            return Response.notModified().build();
+        }
+        courses.put(courseId, course);
+        return Response.ok().build();
+    }
+
+    @Path("courses/{courseId}/students")
+    public Course pathToStudent(@PathParam("courseId") int courseId) {
+        return findById(courseId);
+    }
+
+    private Course findById(int id) {
+        for (Map.Entry<Integer, Course> course : courses.entrySet()) {
+            if (course.getKey() == id) {
+                return course.getValue();
+            }
+        }
+        return null;
+    }
+}