frame10.java~5~

这是用VB编写的一个图书馆管理系统,很好用,特别是对初学者有很好的引导作用.

package test1;

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

/**
 * <p>Title: 图书管理系统</p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2007</p>
 * <p>Company: </p>
 * @author koma
 * @version 1.0
 */

public class Frame10 extends JFrame {
  JLabel jLabel1 = new JLabel();
  JTextField jTextField1 = new JTextField();
  JLabel jLabel2 = new JLabel();
  JTextField jTextField2 = new JTextField();
  JButton jButton1 = new JButton();

  public Frame10() {
    this.setTitle("还书");
    this.setSize(300,300);
    this.setLocation(450,250);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }

  }
  private void jbInit() throws Exception {
    jLabel1.setFont(new java.awt.Font("DialogInput", 0, 20));
    jLabel1.setText("证件号");
    jLabel1.setBounds(new Rectangle(19, 49, 104, 44));
    this.getContentPane().setLayout(null);
    jTextField1.setFont(new java.awt.Font("DialogInput", 0, 20));
    jTextField1.setText("");
    jTextField1.setBounds(new Rectangle(146, 49, 228, 44));
    jLabel2.setFont(new java.awt.Font("DialogInput", 0, 20));
    jLabel2.setText("图书编号");
    jLabel2.setBounds(new Rectangle(13, 126, 97, 44));
    jTextField2.setFont(new java.awt.Font("DialogInput", 0, 20));
    jTextField2.setText("");
    jTextField2.setBounds(new Rectangle(148, 127, 229, 42));
    jButton1.setBounds(new Rectangle(111, 214, 92, 44));
    jButton1.setFont(new java.awt.Font("DialogInput", 0, 20));
    jButton1.setText("确定");
    jButton1.addActionListener(new Frame10_jButton1_actionAdapter(this));
    this.getContentPane().add(jLabel1, null);
    this.getContentPane().add(jLabel2, null);
    this.getContentPane().add(jTextField2, null);
    this.getContentPane().add(jTextField1, null);
    this.getContentPane().add(jButton1, null);
  }

  void jButton1_actionPerformed(ActionEvent e) {
    String userNo=jTextField1.getText();
    String bkNo=jTextField2.getText();
    String bkBorrow="delete from userInfo where(证件号='"+userNo+"' and 图书编号='"+bkNo+"')";
    PreparedStatement pst=Application1.pst1;
    //ResultSet rst1=Application1.rst1;
//    Application1.rst2=Application1.smt.executeQuery("select * from book");
  //  ResultSet rst2=Application1.rst2;
    boolean bl=true;
   try{
      Statement smt=Application1.con.createStatement();
     //Application1.rst2=Application1.smt.executeQuery("select * from book");
     ResultSet rst2=Application1.smt.executeQuery("select * from book");
  // ResultSet rst=Application1.smt.executeQuery("select * from user1");
//   while(rst1.next())
         while(rst2.next()){
     if  (rst2.getString(1).equals(bkNo)){
          System.out.println("koma");
          smt.executeUpdate(bkBorrow);
          break;
      }
   }
   }catch(Exception e1){}

  }
}

class Frame10_jButton1_actionAdapter implements java.awt.event.ActionListener {
  Frame10 adaptee;

  Frame10_jButton1_actionAdapter(Frame10 adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jButton1_actionPerformed(e);
  }
}