diff --git a/apache-cxf/cxf-introduction/pom.xml b/apache-cxf/cxf-introduction/pom.xml
index bc4f0a1225..0a6f387b06 100644
--- a/apache-cxf/cxf-introduction/pom.xml
+++ b/apache-cxf/cxf-introduction/pom.xml
@@ -26,9 +26,6 @@
 	</dependencies>
 	<build>
 		<plugins>
-			<plugin>
-				<artifactId>maven-compiler-plugin</artifactId>
-			</plugin>
 			<plugin>
 				<groupId>org.codehaus.mojo</groupId>
 				<artifactId>exec-maven-plugin</artifactId>
diff --git a/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/Baeldung.java b/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/Baeldung.java
index 6a0b52d504..472d38b8e1 100644
--- a/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/Baeldung.java
+++ b/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/Baeldung.java
@@ -7,10 +7,10 @@ import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
 
 @WebService
 public interface Baeldung {
-    String hello(String name);
+    public String hello(String name);
 
-    String helloStudent(Student student);
+    public String helloStudent(Student student);
 
     @XmlJavaTypeAdapter(StudentMapAdapter.class)
-    Map<Integer, Student> getStudents();
+    public Map<Integer, Student> getStudents();
 }
\ No newline at end of file
diff --git a/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/BaeldungImpl.java b/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/BaeldungImpl.java
index 32fd95dc02..240f6bb1da 100644
--- a/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/BaeldungImpl.java
+++ b/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/BaeldungImpl.java
@@ -7,7 +7,7 @@ import javax.jws.WebService;
 
 @WebService(endpointInterface = "com.baeldung.cxf.introduction.Baeldung")
 public class BaeldungImpl implements Baeldung {
-    Map<Integer, Student> students = new LinkedHashMap<Integer, Student>();
+    private Map<Integer, Student> students = new LinkedHashMap<Integer, Student>();
 
     public String hello(String name) {
         return "Hello " + name;
diff --git a/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/Student.java b/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/Student.java
index 68bbb151df..cad8f94d97 100644
--- a/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/Student.java
+++ b/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/Student.java
@@ -4,5 +4,5 @@ import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
 
 @XmlJavaTypeAdapter(StudentAdapter.class)
 public interface Student {
-    String getName();
+    public String getName();
 }
\ No newline at end of file
diff --git a/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/StudentImpl.java b/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/StudentImpl.java
index 3f57143909..bc9dd27afe 100644
--- a/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/StudentImpl.java
+++ b/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/StudentImpl.java
@@ -4,7 +4,7 @@ import javax.xml.bind.annotation.XmlType;
 
 @XmlType(name = "Student")
 public class StudentImpl implements Student {
-    String name;
+    private String name;
 
     StudentImpl() {
     }
diff --git a/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/StudentMap.java b/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/StudentMap.java
index 8593dcaf86..4c40886c42 100644
--- a/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/StudentMap.java
+++ b/apache-cxf/cxf-introduction/src/main/java/com/baeldung/cxf/introduction/StudentMap.java
@@ -16,7 +16,7 @@ public class StudentMap {
     }
 
     @XmlType(name = "StudentEntry")
-    static class StudentEntry {
+    public static class StudentEntry {
         private Integer id;
         private Student student;
 
diff --git a/apache-cxf/cxf-introduction/src/test/java/com/baeldung/cxf/introduction/StudentTest.java b/apache-cxf/cxf-introduction/src/test/java/com/baeldung/cxf/introduction/StudentTest.java
index 120f3ac5e5..68bc4aa5e8 100644
--- a/apache-cxf/cxf-introduction/src/test/java/com/baeldung/cxf/introduction/StudentTest.java
+++ b/apache-cxf/cxf-introduction/src/test/java/com/baeldung/cxf/introduction/StudentTest.java
@@ -19,9 +19,9 @@ public class StudentTest {
     private static QName SERVICE_NAME = new QName("http://introduction.cxf.baeldung.com/", "Baeldung");
     private static QName PORT_NAME = new QName("http://introduction.cxf.baeldung.com/", "BaeldungPort");
 
-    Service service;
-    Baeldung baeldungProxy;
-    Baeldung baeldungImpl;
+    private Service service;
+    private Baeldung baeldungProxy;
+    private Baeldung baeldungImpl;
 
     {
         service = Service.create(SERVICE_NAME);