title: JTable column header not visible
body: <p>column header not visible in my JTable i have created a JPanel and added the JTable to the JPanel.</p>
  
  <pre><code>Object rowData[][] = { { "Row1-Column1", "Row1-Column2", "Row1-Column3"},
                  { "Row2-Column1", "Row2-Column2", "Row2-Column3"} };
              Object columnNames[] = { "Column One", "Column Two", "Column Three"};
              JTable jTable = new JTable(rowData, columnNames); 
  </code></pre>