Update maven-jar-plugin
diff --git a/modules/samples/java_first_jaxws/pom.xml b/modules/samples/java_first_jaxws/pom.xml
index b439525..e1f4617 100644
--- a/modules/samples/java_first_jaxws/pom.xml
+++ b/modules/samples/java_first_jaxws/pom.xml
@@ -110,13 +110,15 @@
                 <!-- Also build the JAR during the package phase. The JAR is required
                      when deploying on axis2server. -->
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>2.3.1</version>
                 <executions>
                     <execution>
                         <goals>
                             <goal>jar</goal>
                         </goals>
                         <phase>package</phase>
+                        <configuration>
+                            <classifier>classes</classifier>
+                        </configuration>
                     </execution>
                 </executions>
             </plugin>
diff --git a/modules/samples/jaxws-addressbook/pom.xml b/modules/samples/jaxws-addressbook/pom.xml
index b2545eb..3ea24aa 100644
--- a/modules/samples/jaxws-addressbook/pom.xml
+++ b/modules/samples/jaxws-addressbook/pom.xml
@@ -38,7 +38,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>2.3.1</version>
                 <executions>
                     <execution>
                         <id>generate-client-jar</id>
diff --git a/modules/samples/jaxws-calculator/pom.xml b/modules/samples/jaxws-calculator/pom.xml
index 1fd9ded..a147a16 100644
--- a/modules/samples/jaxws-calculator/pom.xml
+++ b/modules/samples/jaxws-calculator/pom.xml
@@ -38,7 +38,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>2.3.1</version>
                 <executions>
                     <execution>
                         <phase>package</phase>
diff --git a/pom.xml b/pom.xml
index 6c7f9db..2a04712 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1160,7 +1160,7 @@
                 </plugin>
                 <plugin>
                     <artifactId>maven-jar-plugin</artifactId>
-                    <version>3.0.2</version>
+                    <version>3.2.0</version>
                 </plugin>
                 <plugin>
                     <artifactId>maven-plugin-plugin</artifactId>