title: Splitting Frame in Three
body: <p>I have coded a GUI that looks like shown below. It is coded as such:</p>
  
  <ul>
  <li>There is a main Frame managed with <code>BorderLayout</code>. </li>
  <li>In the west part of it is a panel with a grid layout of 3 x 2 buttons.</li>
  <li>In the center part is a panel.</li>
  </ul>
  
  <p>I'd like to add a third panel as shown. How can I do this? </p>
  
  <p><a href="https://i.stack.imgur.com/it5rv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/it5rv.png" alt="enter image description here"></a></p>