classesinformationdelete.java~2~

学生信息管理系统,包括成绩查询,成绩排序,用ACCESS做数据库连接

package Chapter1;
import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import java.awt.Rectangle;
import java.awt.Font;
public class ClassesInformationDelete extends JFrame implements ActionListener
{
  public static final int WIDTH=400;
  public static final int HEIGHT=400;
  JLabel jLabel1 = new JLabel();
  JTextField jTextField1 = new JTextField(7);
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  public ClassesInformationDelete()
  {
    setSize(WIDTH,HEIGHT);
    setTitle("已选课删除");
    Container contentPane=getContentPane();
    contentPane.setBackground(Color.green);
    try {
      jbInit();
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }

  }
  public void actionPerformed(ActionEvent e)
  {
    if(e.getActionCommand().equals("删除"))
       {
          try
          {
            String url="jdbc:odbc:MySecondAccess";
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
            Connection con=DriverManager.getConnection(url,"","");
            Statement stmt=con.createStatement();


           String  SQLOrder="DELETE FROM ClassesInformation WHERE 课程名='"+jTextField1.getText()+"'";
           stmt.executeUpdate(SQLOrder);
           stmt.close();
           con.close();
           JOptionPane.showMessageDialog(null,"课程删除成功！","提示信息",JOptionPane.INFORMATION_MESSAGE);
          }
          catch(Exception ex)
          {
            System.out.println(ex.getStackTrace());
            System.out.println(ex.getMessage());
          }
       }

     else if  (e.getActionCommand().equals("返回"))
     {
       this.setVisible(false);
       ManagerInterface n=new ManagerInterface();
       n.setVisible(true);
     }
}

  private void jbInit() throws Exception {
    this.getContentPane().setLayout(new FlowLayout());
    jLabel1.setFont(new java.awt.Font("宋体", Font.BOLD, 13));
    jLabel1.setText("请输入您要删除的课程名:");
    jLabel1.setBounds(new Rectangle(12, 46, 173, 29));
    this.getContentPane().add(jLabel1);
    jButton2.setBounds(new Rectangle(220, 168, 71, 30));
    jButton2.setFont(new java.awt.Font("宋体", Font.BOLD, 13));
    jButton2.setText("返回");
    jButton1.setBounds(new Rectangle(68, 167, 74, 33));
    jButton1.setFont(new java.awt.Font("宋体", Font.BOLD, 13));
    jButton1.setText("删除");
    this.getContentPane().add(jTextField1,-1);
    this.getContentPane().add(jButton1,-1);
    this.getContentPane().add(jButton2,-1);
    jTextField1.setBounds(new Rectangle(190, 48, 80, 24));
    jButton1.addActionListener(this);
    jButton2.addActionListener(this);
  }
}
  public static void main(String[] args)
  {
    ClassesInformationDelete n= new ClassesInformationDelete();
    n.setVisible(true);
  }