title: Java/Spring : Form validation to avoid URLs as input
body: <p>We have a form where user enters their firstName, lastName and address. But some users are entering their firstName/lastName as website. </p>
  
  <pre><code>Ex: www.google.com, google.com or some other spam site.
  </code></pre>
  
  <p>Is there a way to validate these kind of inputs?</p>
  
  <p>Note : We don't want to replace or avoid special characters as it is causing issues when people enter their name in a different language other than English.</p>