title: DoThrow MailException with mockito
body: <p>I have a class JavaMailDao that i want to test using JUnit and mockito. I want to test the Catch part</p>
  
  <pre><code>try {
              this.mailSender.send(msg);
      } catch(MailException ex) {
              throw new BackendException(DaoExceptionType.EMAIL_ERROR);
  }
  </code></pre>
  
  <p>In the test i have this:</p>
  
  <pre><code>Mockito.doNothing().doThrow(new MailException()).when(this.mailSenderMock).send(Mockito.any(SimpleMailMessage.class));
  </code></pre>
  
  <p>The problem it's it says : "can't instantiate the type MailException", and i have the import too by the way.</p>
  
  <pre><code>mport org.springframework.mail.MailException;
  </code></pre>
  
  <p>Does anyone know how to do it? Thank you!</p>