title: How to generate serial version UID in Intellij
body: <p>When I used <strong><em>Eclipse</em></strong> it had a nice feature to generate serial version UID.</p>
  
  <p>But what to do in IntelliJ? </p>
  
  <p><strong><em>How to choose or generate identical serial version UID in IntelliJ?</em></strong></p>
  
  <p>And what to do when you modify old class?</p>
  
  <p>If you haven't specify the <code>id</code>, it is generated at runtime...</p>