private static void drawSelection(JTable table, int column, Graphics g, final int width) {
   int y = 0;
   final int[] rows = table.getSelectedRows();
   final int height = table.getRowHeight();
   for (int row : rows) {
     final TableCellRenderer renderer = table.getCellRenderer(row, column);
     final Component component =
         renderer.getTableCellRendererComponent(
             table, table.getValueAt(row, column), false, false, row, column);
     g.translate(0, y);
     component.setBounds(0, 0, width, height);
     boolean wasOpaque = false;
     if (component instanceof JComponent) {
       final JComponent j = (JComponent) component;
       if (j.isOpaque()) wasOpaque = true;
       j.setOpaque(false);
     }
     component.paint(g);
     if (wasOpaque) {
       ((JComponent) component).setOpaque(true);
     }
     y += height;
     g.translate(0, -y);
   }
 }
  private String extractContent(
      DataGridPanel grid, String delimiter, boolean saveHeader, boolean ecloseWithDowbleQuotes) {
    JTable _table = grid.getTable();

    int numcols = _table.getSelectedColumnCount();
    int numrows = _table.getSelectedRowCount();

    if (numcols > 0 && numrows > 0) {
      StringBuffer sbf = new StringBuffer();
      int[] rowsselected = _table.getSelectedRows();
      int[] colsselected = _table.getSelectedColumns();

      if (saveHeader) {
        // put header name list
        for (int j = 0; j < numcols; j++) {
          String text =
              (String)
                  _table
                      .getTableHeader()
                      .getColumnModel()
                      .getColumn(colsselected[j])
                      .getHeaderValue();
          sbf.append(text);
          if (j < numcols - 1) sbf.append(delimiter);
        }
        sbf.append("\n");
      }

      // put content
      for (int i = 0; i < numrows; i++) {
        for (int j = 0; j < numcols; j++) {
          Object value = _table.getValueAt(rowsselected[i], colsselected[j]);
          String _value = "";
          if (value != null) {
            _value = value.toString();
          }
          if (ecloseWithDowbleQuotes) {
            sbf.append("\"").append(_value).append("\"");
          } else {
            sbf.append(_value);
          }

          if (j < numcols - 1) sbf.append(delimiter);
        }
        sbf.append("\n");
      }

      //            StringSelection stsel = new StringSelection(sbf.toString());
      //            Clipboard system = Toolkit.getDefaultToolkit().getSystemClipboard();
      //            system.setContents(stsel, stsel);
      return sbf.toString();
    }

    return null;
  }