title: Customizing SimpleCaptcha
body: <p>We're using SimpleCaptcha <a href="http://simplecaptcha.sourceforge.net/" rel="nofollow noreferrer">http://simplecaptcha.sourceforge.net/</a> to creating a captcha in our registration form (running on Tomcat) </p>
  
  <p>We create the captcha using: </p>
  
  <pre><code>Captcha captcha = new Captcha.Builder(300, 57).build(); 
  </code></pre>
  
  <p>and the captcha is displayed as follows: 
  <img src="https://i.stack.imgur.com/PXjp8.png" alt="enter image description here"></p>
  
  <p>But when I add more options to the captcha such as <code>Captcha captcha = new Captcha.Builder(300, 57).addNoise().build();</code>, it's still displayed in the same way without the noise. I tried more options but still get the same results.</p>
  
  <p>Does anyone know why this is happening please?</p>
  
  <p>Thanks,</p>
  
  <p>Kurt</p>