title: generics are not supported in -source 1.3
body: <p>I have a problem while maven packaging. In this code:</p>
  
  <pre><code>public class LoginDialog extends Dialog {
  
      private final TextField&lt;String&gt; customer;
                            ^here
      private final TextField&lt;String&gt; login1;
      private final TextField&lt;String&gt; password1;
      private final MainController controller= new MainController();
      private String customerId;
      private String login;
      private String password;
  </code></pre>
  
  <p>I have an error like:</p>
  
  <pre><code>[ERROR] BUILD FAILURE
  [INFO] ------------------------------------------------------------------------
  [INFO] Compilation failure
  ...src/main/java/com/messagedna/web/client/widget/LoginDialog.java:[19,27] error: generics are not supported in -source 1.3
  </code></pre>
  
  <p>what may be the reason of this?</p>