classdel.java~24~

java语言做的教务管理系统

                          toString();

    //开学时间(年，月，日)
    String beginstimenameyear = this.cbobeginstimeyear.getSelectedItem().
                                toString();

    String beginstimenamemonth = this.cbobeginstimemonth.
                                 getSelectedItem().
                                 toString();

    String beginstimenamedate = this.cbobeginstimedate.getSelectedItem().
                                toString();

    //毕业时间(年，月，日)
    String endtimenameyear = this.cboendtimeyear.getSelectedItem().
                             toString();

    String endtimenamemonth = this.cboendtimemonth.getSelectedItem().
                              toString();

    String endtimenamedate = this.cboendtimedate.getSelectedItem().
                             toString();

    //开学时间
    String beginstimename =
            this.cbobeginstimeyear.getSelectedItem().toString() + "-" +
            this.cbobeginstimemonth.getSelectedItem().toString() + "-" +
            this.cbobeginstimedate.getSelectedItem().toString() + " ";

    //毕业时间
    String endtimename =
            this.cboendtimeyear.getSelectedItem().toString() + "-" +
            this.cboendtimemonth.getSelectedItem().toString() + "-" +
            this.cboendtimedate.getSelectedItem().toString() + " ";

    JButton classdel = new JButton();

    public void btnclassselect_actionPerformed(ActionEvent e) {
        try {
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
            Connection nod = DriverManager.getConnection("jdbc:odbc:studer");
            String daima = "select classno,classmastername,classcategory,classSemester,beginstime,endtime,classRemarks from class where 1=1";
            if (!this.txtclassno.getText().equals("")) {
                daima += " and classno = '" + this.txtclassno.getText() + "'";
            }
            if (!this.txtclassmastername.getText().equals("")) {
                daima += " and classmastername ='" +
                        this.txtclassmastername.getText() + "'";
            }
            if (!categoryname.equals("")) {
                daima += " and classcategory ='" + categoryname + "'";
            }
            if (!Semestername.equals("")) {
                daima += " and classSemester='" + Semestername + "'";
            }
            if (!beginstimenameyear.equals("")) {
                daima += " and beginstime like '%" + beginstimenameyear + "%'";
            }
            if (!beginstimenamemonth.equals("")) {
                daima += " and beginstime like '%" + beginstimenamemonth + "%'";
            }
            if (!beginstimenamedate.equals("")) {
                daima += " and beginstime like '%" + beginstimenamedate + "%'";
            }
            if (!endtimenameyear.equals("")) {
                daima += " and endtime like '%" + endtimenameyear + "%'";
            }
            if (!endtimenamemonth.equals("")) {
                daima += " and endtime like '%" + endtimenamemonth + "%'";
            }
            if (!endtimenamedate.equals("")) {
                daima += " and endtime like '%" + endtimenamedate + "%'";
            }
            PreparedStatement sql = nod.prepareStatement(daima);
            ResultSet i = sql.executeQuery();
            mod.setNumRows(0);
            while (i.next()) {
                Object j[] = {i.getString(1), i.getString(2), i.getString(3),
                             i.getString(4), i.getString(5), i.getString(6),
                             i.getString(7)};
                mod.addRow(j);
            }
            tbclass.updateUI();
            i.close();
            sql.close();
            nod.close();
        } catch (Exception ex) {

        }

    }

    public void tbclass_keyPressed(KeyEvent e) {

    }

    public void tbclass_mouseClicked(MouseEvent e) {
        int row = this.tbclass.getSelectedRow();
        if (row > -1) {
            this.txtclassno.setText(this.tbclass.getValueAt(row, 0).toString());
            this.txtclassmastername.setText(this.tbclass.getValueAt(row, 1).
                                            toString());
            this.cboclasscategory.setSelectedItem(this.tbclass.getValueAt(row,
                    2).
                                                  toString());
            this.cboclassSemester.setSelectedItem(this.tbclass.getValueAt(row,
                    3).toString());
            String beginstime = this.tbclass.getValueAt(row, 4).toString();
            this.cbobeginstimeyear.setSelectedItem(beginstime.substring(0, 4));
            this.cbobeginstimemonth.setSelectedItem(beginstime.substring(5, 7));
            this.cbobeginstimedate.setSelectedItem(beginstime.substring(8, 10));
            String endtime = this.tbclass.getValueAt(row, 5).toString();
            this.cboendtimeyear.setSelectedItem(endtime.substring(0, 4));
            this.cboendtimemonth.setSelectedItem(endtime.substring(5, 7));
            this.cboendtimedate.setSelectedItem(endtime.substring(8, 10));
            this.txaclassRemarks.setText(this.tbclass.getValueAt(row, 6).
                                         toString());
        }
    }

    public void classupdate_actionPerformed(ActionEvent e) {
        try {
            int row = this.tbclass.getSelectedRow();
            if (JOptionPane.showConfirmDialog(this, "你确定删除吗?", "删除提示",
                                              JOptionPane.OK_CANCEL_OPTION) ==
                JOptionPane.OK_OPTION) {
                if (row < 0) {
                    JOptionPane.showMessageDialog(this, "请选择数据");
                    return;
                }
                Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
                Connection nod = DriverManager.getConnection(
                        "jdbc:odbc:studer");
                PreparedStatement sql = nod.prepareStatement(
                        "delete from class where classno = ?");
                sql.setString(1, this.tbclass.getValueAt(row, 0).toString());
                int i = sql.executeUpdate();
                if (i > 0) {
                    mod.removeRow(row);
                    JOptionPane.showMessageDialog(this, "删除成功");
                } else {
                    JOptionPane.showMessageDialog(this, "删除失败");
                }
                sql.close();
                nod.close();
            }
        } catch (Exception ex) {

        }

    }
}


class classdel_classupdate_actionAdapter implements ActionListener {
    private classdel adaptee;
    classdel_classupdate_actionAdapter(classdel adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.classupdate_actionPerformed(e);
    }
}


class classdel_tbclass_keyAdapter extends KeyAdapter {
    private classdel adaptee;
    classdel_tbclass_keyAdapter(classdel adaptee) {
        this.adaptee = adaptee;
    }

    public void keyPressed(KeyEvent e) {
        adaptee.tbclass_keyPressed(e);
    }
}


class classdel_tbclass_mouseAdapter extends MouseAdapter {
    private classdel adaptee;
    classdel_tbclass_mouseAdapter(classdel adaptee) {
        this.adaptee = adaptee;
    }

    public void mouseClicked(MouseEvent e) {
        adaptee.tbclass_mouseClicked(e);
    }
}


class classdel_btnclassselect_actionAdapter implements ActionListener {
    private classdel adaptee;
    classdel_btnclassselect_actionAdapter(classdel adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.btnclassselect_actionPerformed(e);
    }
}