title: Using GridLayout - how to set JPanel size?
body: <p><img src="https://i.stack.imgur.com/9n8we.png" alt="enter image description here">I'm using <code>GridLayout</code> and all my panels have the same size, how can I change their size?</p>
  
  <p>I tried all functions getPreferred/Minimum/MaximumSize which makes that, and nothing.
  I still want to stay with GridLayout
  Any suggestions?</p>