diff --git a/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java
index b619597d990c..226aea1527c9 100644
--- a/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/ApiClient.java
@@ -68,6 +68,7 @@ public class ApiClient {
   protected Map<String, String> defaultHeaderMap = new HashMap<String, String>();
   protected Map<String, String> defaultCookieMap = new HashMap<String, String>();
   protected String basePath = "http://petstore.swagger.io:80/v2";
+  protected String userAgent;
   private static final Logger log = Logger.getLogger(ApiClient.class.getName());
 
   protected List<ServerConfiguration> servers = new ArrayList<ServerConfiguration>(Arrays.asList(
@@ -438,10 +439,19 @@ public class ApiClient {
    * @return API client
    */
   public ApiClient setUserAgent(String userAgent) {
+    userAgent = userAgent;
     addDefaultHeader("User-Agent", userAgent);
     return this;
   }
 
+  /**
+   * Get the User-Agent header's value.
+   * @return User-Agent string
+   */
+  public String getUserAgent(){
+    return userAgent;
+  }
+
   /**
    * Add a default header.
    *