title: Put 4 JLabel at corners of a JFrame
body: <p>As the title said, I'm trying to put 4 different JLabels at each of the corners of a JFrame. I want them to stay there forever even if I try to resize the JFrame</p>
  
  <p>I've tried using a layout manager but I just can't get it right.</p>
  
  <pre><code>    ImageIcon icon;
      JLabel labelNW = new JLabel();
      JLabel labelNE = new JLabel();
      JLabel labelSW = new JLabel();
      JLabel labelSE = new JLabel();
      URL buttonURL = InputOutputTest.class.getResource("images/square_dot.gif");
      if(buttonURL != null){
          icon = new ImageIcon(buttonURL);
          labelNW.setIcon(icon);
          labelNE.setIcon(icon);
          labelSW.setIcon(icon);
          labelSE.setIcon(icon);
      }
      window.add(labelNW, BorderLayout.NORTH);
      //window.add(labelNE, BorderLayout.EAST);
      //window.add(labelSW, BorderLayout.WEST);
      window.add(labelSE, BorderLayout.SOUTH);
  </code></pre>
  
  <p>This code takes care of the north and south of the left side. I'm probably approaching this wrong though.</p>
  
  <p>I also tried GridLayout (2,2) but they weren't at the corners and there's a huge gap on the right side.</p>