title: How to get rid of the border with a JTable / JScrollPane
body: <p>If you run the small sample below you'll see a border around the center region.  I'm not sure why this border is showing.</p>
  
  <p>It happens when a JTable is in a JScrollPane. I tried various things to remove it but so far no luck. A JTable without the JScrollPane shows no border.</p>
  
  <p>See sample below. TIA.</p>
  
  <pre><code>public class TestScrollPane extends JFrame {
  
      public static void main(String[] args) {
          JFrame frame = new TestScrollPane();
          JPanel panel = new JPanel();
          JTable table = new JTable();
  
          panel.setLayout(new BorderLayout());
          panel.add(new JLabel("NORTH"), BorderLayout.NORTH);
          panel.add(new JLabel("SOUTH"), BorderLayout.SOUTH);
  
          JScrollPane sp = new JScrollPane(table);
          // None of these have any effect
          sp.setBorder(null);
          sp.getInsets().set(0, 0, 0, 0);
          sp.setViewportBorder(null);
          sp.getViewport().setBorder(null);
          sp.getViewport().getInsets().set(0, 0, 0, 0);
          sp.getViewport().setOpaque(true);
  
          panel.add(sp, BorderLayout.CENTER);
          // Adding the table alone shows no border
          // panel.add(table, BorderLayout.CENTER);
          frame.add(panel);
  
          frame.setVisible(true);
      }
  
      public TestScrollPane() throws HeadlessException {
          setDefaultCloseOperation(EXIT_ON_CLOSE);
          setMinimumSize(new Dimension(100, 100));
      }
  }
  </code></pre>