'"+mz+"'";
stm.executeUpdate(sql);
} catch (Exception a) {
// TODO Auto-generated catch block
a.printStackTrace();
};}
if(e.getSource()==bu1){
this.dispose();
Showwin7 k=new Showwin7();
k.setSize(350,350);
} }//@Override
public void textValueChanged(TextEvent e) {
// TODO Auto-generated method stub
}}
(14)
import java.awt.GridLayout;
import java.awt.TextField;
import java.awt.event.*;
import java.sql.*;
import javax.swing.*;
public class delyh {
public static void main(String[] args) {
// TODO Auto-generated method stub
show2 win=new show2();
win.setSize(350,350);
win.setVisible(true);
win.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}});/**/ }
}class dely extends JFrame implements ActionListener,TextListener{
String nn,ma;
JLabel lab=new JLabel("请输入用户名:");
TextField tex=new TextField();
JLabel lab1=new JLabel("请输入密码:");
TextField tex1=new TextField();
JButton but=new JButton("确定");
JButton bu1=new JButton("返回");
dely(){
super("用户信息删除");
setLayout(new GridLayout(10,10));
 , ; add(lab);
add(tex);
add(lab1);
add(tex1);
add(but);
add(bu1);
but.addActionListener(this);
bu1.addActionListener(this);
pack();
show();
}//@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getSource()==but){
try {
nn=tex.getText();
ma=tex1.getText();
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
String url = "jdbc:sqlserver://localhost:1433;databasename=课程设计";
Connection conn = DriverManager.getConnection(url,"sa","123456");
Statement stm = conn.createStatement();
String sql = "delete from 用户信息 where 用户名='"+nn+"' and 密码='"+ma+"'";
stm.executeUpdate(sql);
} catch (Exception a) {
// TODO Auto-generated catch block
a.printStackTrace();
};}
if(e.getSource()==bu1){
this.dispose();
Showwin5 w=new Showwin5();
w.setSize(350,350);
}}//@Override
public void textValueChanged(TextEvent e) {
// TODO Auto-generated method stub
}}
(15)
import java.awt.GridLayout;
import java.awt.TextField;
import java.awt.event.*;
import java.sql.*;
import javax.swing.*;
public class delstuID {
public static void main(String[] args) {
// TODO Auto-generated method stub
show2 win=new show2();
win.setSize(350,350);
win.setVisible(true);
win.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}});/**/}}
class show2 extends JFrame implements ActionListener,TextListener{
String nn;
JLabel lab=new JLabel("请输入:");
TextField tex=new TextField();
JButton but=new JButton("确定");
JButton bu1=new JButton("返回");
show2(){
super("学生信息删除");
setLay
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