selectdialog.java~10~

简单的学生管理系统。。用JBUILER和SQL2000。

package studentgl;

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.sql.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class selectDialog extends JDialog {
  JPanel panel1 = new JPanel();
  String stid;
  private  mainFrame Frame1;
  JLabel jLabel1 = new JLabel();
  JComboBox jComboBox1 = new JComboBox();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  Connection con ;
  Statement stmt1 ;
  Statement stmt2 ;
  ResultSet Rs;
   ResultSet Rs1;
  public selectDialog(mainFrame frame, String title, boolean modal) {
    super(frame, title, modal);
    Frame1=frame;
    this.setLocation(309,239);
    try {
      jbInit();
      pack();
    }
    catch(Exception ex) {
      ex.printStackTrace();
    }
  }

  public selectDialog() {
    this(null, "", false);
  }
  private void jbInit() throws Exception {
    panel1.setLayout(null);
    jLabel1.setFont(new java.awt.Font("Serif", 0, 16));
    jLabel1.setForeground(SystemColor.textHighlight);
    jLabel1.setHorizontalAlignment(SwingConstants.CENTER);
    jLabel1.setText("选择课程：");
    jLabel1.setBounds(new Rectangle(46, 53, 125, 22));
    con = connect.getconn();
    stmt1 = con.createStatement();
    Rs = stmt1.executeQuery("select coname form courseinfo");

    jComboBox1.setFont(new java.awt.Font("Serif", 0, 12));
    jComboBox1.setBounds(new Rectangle(171, 51, 163, 26));
    jComboBox1.addItem("");
   while(Rs.next()){
     jComboBox1.addItem(Rs1.getString("CoName"));
   }
   con.close();

    jButton1.setBounds(new Rectangle(79, 195, 73, 25));
    jButton1.setFont(new java.awt.Font("Serif", 0, 12));
    jButton1.setForeground(Color.red);
    jButton1.setText("确定");
    jButton1.addActionListener(new selectDialog_jButton1_actionAdapter(this));
    jButton2.setText("重设");
    jButton2.setForeground(Color.orange);
    jButton2.setFont(new java.awt.Font("Serif", 0, 12));
    jButton2.setBounds(new Rectangle(253, 195, 73, 25));

    this.getContentPane().add(panel1, BorderLayout.CENTER);
    panel1.add(jComboBox1, null);
    panel1.add(jLabel1, null);
    panel1.add(jButton1, null);
    panel1.add(jButton2, null);

  }

  void jButton1_actionPerformed(ActionEvent e) {
      if(jComboBox1.getSelectedItem().toString()!=null)
         {
         try{
         stid=Frame1.StID;
         con=connect.getconn();
         Statement stmt=con.createStatement();
         String co=jComboBox1.getSelectedItem().toString();
        String loginQuery="select coID from courseInfo where coname='"+co+"'";
        ResultSet rs = stmt.executeQuery(loginQuery);

      int an=JOptionPane.showConfirmDialog(this,"学号为'"+stid+"'同学确定选择课程","信息提示",0);
       if(an==0){

        rs.next();
        int coid =rs.getInt("coid");
        String insert="insert into Score values('"+stid+"','"+coid+"','')";
        stmt.executeUpdate(insert);
        this.hide();
       return;}
    }
       catch(SQLException ex){
       System.out.print(ex);}
       }
       }
}

class selectDialog_jButton1_actionAdapter implements java.awt.event.ActionListener {
  selectDialog adaptee;

  selectDialog_jButton1_actionAdapter(selectDialog adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }
}