while  (true){
try {
           DefaultTableCellRenderer tcr = new DefaultTableCellRenderer() {
                public Component getTableCellRendererComponent(JTable table,
                     Object value, boolean isSelected, boolean hasFocus,
                      int row, int column) {
                      if (row, column是我要闪烁的表格坐标){
                               if (flag){
                                setBackground(Color.WHITE);
                                flag = false;
                               }else{
                                setBackground(Color.RED);
                                flag = true;
                      }

                      return super.getTableCellRendererComponent(table, value,
                                isSelected, hasFocus, row, column);
                 }
              }
        TableColumnModel model = table.getColumnModel();
        for (int i = 0; i < model.getColumnCount(); i++) {
             model.getColumn(i).setCellRenderer(tcr);
        }

         Thread.sleep(2000);
}catch (Exception ex) {
        ex.printStackTrace();
 }