Problema com Exception

public DefaultListModel getList() throws SQLException {
        DefaultListModel lista = new DefaultListModel();
        PreparedStatement stmt = this.connection.prepareStatement("SELECT * FROM COMPANY");
        ResultSet rs;
        try {
            this.connection = new ConnectionFactory().getConnection();
            rs = stmt.executeQuery();
        } catch (SQLException e) {
            throw new RuntimeException(e);
        } finally {
            connection.close();
        }
        while(rs.next()){
            Company company = new Company();
            company.setSigla(rs.getString("ID"));
            company.setSigla(rs.getString("NAME"));
            lista.addElement(company);
        }
        rs.close();
        stmt.close();
        return lista;
    }

package visual;

import database.CompanyDAO;
import javax.swing.DefaultListModel;
import javax.swing.JFrame;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;

/**
 * @author Jefferson Santana Silva
 */
public class Consulta extends JFrame throws SQLException {

    public static final int ROWS = 10;
    String[] columnNames = {"Sigla","Nome"};
    JTable table = new JTable(new DefaultTableModel(columnNames,ROWS));
    DefaultListModel lista = new CompanyDAO().getList();
}