title: "Change" panel on jframe
body: <p>I have 2 panels, the first one is the menu, and the second is the application main panel. Firstly the menu panel shows up, than i need to switch to the other panel if a specific button is pressed on the menu (the menu is hidden but the app returns to it after running is completed). &amp;&amp; i need to resize the frame too if it's possible.</p>
  
  <p>can i do this somehow?</p>