title: Google app engine mobile application getting error
body: <p>I am creating mobile application in android using google app engine endpoits. I have created endpoints and add all jars and packages in my mobile application by creating cleient endpoint library.</p>
  
  <p>this is my code to create builder and call API</p>
  
  <pre><code>Employeeendpoint.Builder builder = new Builder(
              AndroidHttp.newCompatibleTransport(), new JacksonFactory(),
              null);
      builder = CloudEndpointUtils.updateBuilder(builder);
      Employeeendpoint endpoint = builder.build();
      try {
  
          Employee s = endpoint.getEmployee("2").execute();
  
      } catch (IOException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
      }
  </code></pre>
  
  <p>but this will give me below error,</p>
  
  <pre><code>Could not find class 'com.appspot.fuogydemo.employeeendpoint.Employeeendpoint$Builder', referenced from method com.example.sample.MainActivity.onCreate
  </code></pre>
  
  <p>Where as this class is present in my application</p>
  
  <pre><code>public Builder(com.google.api.client.http.HttpTransport transport, com.google.api.client.json.JsonFactory jsonFactory,
      com.google.api.client.http.HttpRequestInitializer httpRequestInitializer) {
    super(
        transport,
        jsonFactory,
        DEFAULT_ROOT_URL,
        DEFAULT_SERVICE_PATH,
        httpRequestInitializer,
        false);
  }
  
  /** Builds a new instance of {@link Employeeendpoint}. */
  @Override
  public Employeeendpoint build() {
    return new Employeeendpoint(this);
  }
  
  @Override
  public Builder setRootUrl(String rootUrl) {
    return (Builder) super.setRootUrl(rootUrl);
  }
  
  @Override
  public Builder setServicePath(String servicePath) {
    return (Builder) super.setServicePath(servicePath);
  }
  
  @Override
  public Builder setHttpRequestInitializer(com.google.api.client.http.HttpRequestInitializer httpRequestInitializer) {
    return (Builder) super.setHttpRequestInitializer(httpRequestInitializer);
  }
  
  @Override
  public Builder setApplicationName(String applicationName) {
    return (Builder) super.setApplicationName(applicationName);
  }
  
  @Override
  public Builder setSuppressPatternChecks(boolean suppressPatternChecks) {
    return (Builder) super.setSuppressPatternChecks(suppressPatternChecks);
  }
  
  @Override
  public Builder setSuppressRequiredParameterChecks(boolean suppressRequiredParameterChecks) {
    return (Builder) super.setSuppressRequiredParameterChecks(suppressRequiredParameterChecks);
  }
  
  @Override
  public Builder setSuppressAllChecks(boolean suppressAllChecks) {
    return (Builder) super.setSuppressAllChecks(suppressAllChecks);
  }
  
  /**
   * Set the {@link EmployeeendpointRequestInitializer}.
   *
   * @since 1.12
   */
  public Builder setEmployeeendpointRequestInitializer(
      EmployeeendpointRequestInitializer employeeendpointRequestInitializer) {
    return (Builder) super.setGoogleClientRequestInitializer(employeeendpointRequestInitializer);
  }
  
  @Override
  public Builder setGoogleClientRequestInitializer(
      com.google.api.client.googleapis.services.GoogleClientRequestInitializer googleClientRequestInitializer) {
    return (Builder) super.setGoogleClientRequestInitializer(googleClientRequestInitializer);
  }
  </code></pre>
  
  <p>}</p>
  
  <p>So please any one help me out what is problem.
  thanks in advance.</p>