code: public void showColumn(int modelColumn) {
  		for (TableColumn column : allColumns) {
  			if (column.getModelIndex() == modelColumn) {
  				showColumn(column);
  				break;
  			}
  		}
  	}
docs: Show a hidden column in the table.
  
  @param modelColumn
  the column index from the TableModel of the column to be added