JBuilder数据库问题

Question

这样做：
try{
        //DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());注册，下同
        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        String url = "jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ=.\\db\\DemoDB.mdb";
        cn=DriverManager.getConnection(url);
        cn.setAutoCommit(false);
        st = cn.createStatement();
        rs = st.executeQuery("Select * from tbBaseInfo");
        if(rs.next()){
          jdbTextArea1.setText(rs.getString(1));
        }
        else{
          JOptionPane.showMessageDialog(null,"没有该记录，请继续！","系统提示",JOptionPane.INFORMATION_MESSAGE);
        }
        cn.close();
        rs.close();     }
     catch(Exception ex){
        System.out.println("failed");
     }*/