Coding

DefaultTableModel model = ( DefaultTableModel) empTbl.getModel();

        try {

            Class.forName("java.sql.Driver");

            Connection con = DriverManager.getConnection

                    ("jdbc:mysql://localhost/project","root","password");

            Statement stmt = con.createStatement();

            String sfld = (String) srchFldCBX.getSelectedItem();

            String op = (String) opCBX.getSelectedItem();

            String crit = criteriaTF.getText();

            String query = "SELECT * FROM cab WHERE " + sfld + " " + op + " ' " + crit + "';";

            ResultSet rs = stmt.executeQuery(query);

            int count = 0;

            while (rs.next()) {

                count++;

                model.addRow(new Object[] {

                rs.getString(1),rs.getString(2),rs.getString(3),rs.getLong(4),rs.getString(5),rs.getString(6)

                        });

            }

            msg=msg+"Criteria'"+sfld+""+op+""+crit+"'fetched"+count+"rows.\n";

            rs.close();

            stmt.close();

            con.close();

        }

        catch(Exception e) {

            JOptionPane.showMessageDialog(null,e.toString());

        }