title: Netbean Java Swing, JPanel/Jlabel Cant cover whole Frame
body: <p>I want to make my <code>JLabel</code> cover the whole frame but when i do so it wont cover the text field and ok button. how do i make my <code>JLabel</code> to cover whole frame content. </p>
  
  <p><img src="https://i.stack.imgur.com/dQ4vQ.jpg" alt="enter image description here"></p>
  
  <p>P/s I want to make this <code>jlabel</code> as a background so i can put my icon in <code>jlabel</code> as background picture.</p>