删除 'Test3.java'

Test3.java

@@ -1,178 +0,0 @@
-package C;
-
-
- import javax.swing.*;
- import java.util.*;
- import java.awt.*;
- import java.awt.event.*;
- import java.sql.Connection;
- import java.sql.Driver;
- import java.sql.DriverManager;
- import java.sql.PreparedStatement;
- import java.sql.ResultSet;
- import java.sql.Statement;
- 
- public class Test3 extends JFrame implements ActionListener {
-     //定义一些控件
-     JPanel jp1,jp2;
-     JLabel jl1,jl2;
-     JButton jb1,jb2,jb3,jb4,jb5;
-     JTable jt;
-     JScrollPane jsp;
-     JTextField jtf;
-     StuModel sm;
-     //定义连接数据库的变量
-     Statement stat = null;
-     PreparedStatement ps;
-     Connection ct = null;
-     ResultSet rs = null;
-     
-     public static void main(String[] args){
-         Test3 test3 = new Test3();
-     }
-     //构造函数
-     public Test3(){
-         jp1 = new JPanel();
-         jtf = new JTextField(10);
-         jb1 = new JButton("查询");
-         jb1.addActionListener(this);
-         jl1 = new JLabel("请输入设备名称：");
-         jp1.add(jl1);
-         jp1.add(jtf);
-         jp1.add(jb1);
-         jb5 = new JButton("返回");
-         jb5.addActionListener(this);
-         jp1.add(jb5);
- 
-         jb2 = new JButton("添加");
-         jb2.addActionListener(this);
-         jb3 = new JButton("修改");
-         jb3.addActionListener(this);
-         jb4 = new JButton("删除");
-         jb4.addActionListener(this);
-
-         
-         jp2 = new JPanel();
-         jp2.add(jb2);
-         jp2.add(jb3);
-         jp2.add(jb4);
-         //创建模型对象
-         sm = new StuModel();
-         
-         
-         //初始化
-         jt = new JTable(sm);
-         
-         jsp = new JScrollPane(jt);
-         
-         //将jsp放入到jframe中
-         this.add(jsp);
-         this.add(jp1,"North");
-         this.add(jp2,"South");
-         this.setSize(600, 400);
-         this.setLocation(300, 200);
-         this.setDefaultCloseOperation(EXIT_ON_CLOSE);
-         this.setVisible(true);
-     
-     }
-     public void actionPerformed(ActionEvent arg0) {
-         //判断是哪个按钮被点击
-      if(arg0.getSource() == jb1){
-          System.out.println("用户希望被查询...");
-         //因为把对表的数据封装到StuModel中，可以比较简单的完成查询
-         String name = this.jtf.getText().trim();
-         //写一个sql语句
-         String sql = "select * from stu where 设备名称 = '"+name+"' ";
-         //构建一个数据模型类，并更新
-         sm = new StuModel(sql);
-         //更新jtable
-           jt.setModel(sm);        
-       }
-      else if(arg0.getSource() == jb5){
-    	      System.out.println("返回...");
-    	      String sql = "select * from stu";
-              sm = new StuModel(sql);
-              jt.setModel(sm);
-       }	      
-      
-      //一、弹出添加界面
-      else if(arg0.getSource() == jb2){
-      System.out.println("添加...");
-      StuAddDiag sa = new StuAddDiag(this,"添加设备",true);
-          
-      //重新再获得新的数据模型,
-      sm = new StuModel();
-      jt.setModel(sm);
-
-      }else if(arg0.getSource() == jb4){
-      //二、删除记录
-      //1.得到学生的ID
-      int rowNum = this.jt.getSelectedRow();//getSelectedRow会返回给用户点中的行
-      //如果该用户一行都没有选，就返回-1
-      if(rowNum == -1){
-      //提示
-      JOptionPane.showMessageDialog(this, "请选中一行");
-      return ;
-      }
-     //得到学术ID
-      String 设备Id = (String)sm.getValueAt(rowNum, 0);
-      System.out.println("Id：   "+设备Id);
-          
-      //连接数据库,完成删除任务
-      try{
-         //1.加载驱动
-      Class.forName("com.mysql.jdbc.Driver");    
-      //2.连接数据库
-      String url = "jdbc:mysql://localhost:3306/spdb1";
-      String user = "root";
-      String passwd = "qsefthuko";
-              
-      ct = DriverManager.getConnection(url, user, passwd);
-      System.out.println("连接成功");
-      ps = ct.prepareStatement("delete from stu where 设备Id = ?");
-
-      ps.setString(1,设备Id);
-
-      ps.executeUpdate();
-                       
-      }catch(Exception e){
-          e.printStackTrace();
-      }finally{
-      try{
-          if(rs!= null){
-          rs.close();
-          rs = null;
-                      
-          }
-          if(ps!= null){
-          ps.close();
-          ps = null;
-          }
-          if(ct != null){
-          ct.close();
-          ct = null;
-          }
-      } catch(Exception e){
-          e.printStackTrace();
-      }
-          }
-      sm = new StuModel();
-     //更新jtable
-      jt.setModel(sm); 
-      }else if(arg0.getSource() == jb3){
-      System.out.println("11111");
-      //三、用户希望修改
-      int rowNum = this.jt.getSelectedRow();
-      if(rowNum == -1){
-      //提示
-      JOptionPane.showMessageDialog(this, "请选择一行");
-      return ;
-      }
-      //显示对话框
-      System.out.println( "12435");
-     StuUpDiag su = new StuUpDiag(this, "修改设备", true, sm, rowNum);
-     sm = new StuModel();
-     jt.setModel(sm);
-      }    
-     }
- }