insertgrade.java

本软件很好的解决了学生信息管理的功能

/*
 * Created on 2007-1-15
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
import java.awt.*;
import java.awt.event.*;

import javax.swing.*;

import java.io.*;
import java.util.*;
/**
 * @author tsiudongyang
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class InsertGrade extends JDialog implements ActionListener
{ 
	  Hashtable 基本成绩表=null;                           
	  JTextField 学号,语文,英语,数学;                 
	  JButton 退出;
	  JButton 录入,重置;
	  StudentG  学生成=null;
	  FileInputStream inOne=null;
	  ObjectInputStream inTwo=null;
	  FileOutputStream outOne=null;
	  ObjectOutputStream outTwo=null;
	  File file=null;                                           
	  public InsertGrade(JFrame f,File file)
	  {
	   super(f,"学生成绩录入",false);                           
	   this.file=file;
	   退出=new JButton("退出");
	   退出.addActionListener(this);
	   录入=new JButton("录入");
	   重置=new JButton("重置");
	   录入.addActionListener(this);
	   重置.addActionListener(this);
	   学号=new JTextField(10);
	   语文=new JTextField(10);
	   数学=new JTextField(10);
	   英语=new JTextField(10);
	   Box box1=Box.createHorizontalBox();              
	   box1.add(new JLabel("输入学生的学号:",JLabel.CENTER));
	   box1.add(学号);
	   //box1.add(录入);
	   Box box2=Box.createHorizontalBox();              
	   box2.add(new JLabel("语文:",JLabel.CENTER));
	   box2.add(语文);
	   Box box3=Box.createHorizontalBox();              
	   box3.add(new JLabel("数学:",JLabel.CENTER));
	   box3.add(数学);
	   //box3.add(女);
	   Box box4=Box.createHorizontalBox();              
	   box4.add(new JLabel("英语:",JLabel.CENTER));
	   box4.add(英语);
	   Box boxH=Box.createVerticalBox();              
	   boxH.add(box1);
	   boxH.add(box2);
	   boxH.add(box3);
	   boxH.add(box4);
	   boxH.add(Box.createVerticalGlue());          
	   JPanel pCenter=new JPanel();
	   pCenter.add(boxH);
	   Container con=getContentPane();
	   con.add(pCenter,BorderLayout.CENTER);
	   con.validate();
	   JPanel pSouth=new JPanel();
	   pSouth.add(录入);
	   pSouth.add(重置);
	   pSouth.add(退出);
	   add(pSouth,BorderLayout.SOUTH);
	   validate();
	   setBounds(100,200,360,270);
	  }
	 public void actionPerformed(ActionEvent e)
	  {    
	    if(e.getSource()==录入)
	      {
	         String number="";
	         number=学号.getText();
	        
	         if(number.length()>0)
	            {
	              try {
	                    inOne=new FileInputStream(file);
	                    inTwo=new ObjectInputStream(inOne);
	                    基本成绩表=(Hashtable)inTwo.readObject();
	                    inOne.close();
	                    inTwo.close();
	                  }
	               catch(Exception ee)
	                   {
	                   }
	              if(基本成绩表.containsKey(number))          
	                 {
	              	String warning="该生成绩已存在,请到修改页面修改!";
                   JOptionPane.showMessageDialog(this,warning,"警告",JOptionPane.WARNING_MESSAGE);
	                 }
	              else
	              {  
	                   String m="学生成绩将被录入!";
	                   int ok=JOptionPane.showConfirmDialog(this,m,"确认",JOptionPane.YES_NO_OPTION,JOptionPane.INFORMATION_MESSAGE);
	                  if(ok==JOptionPane.YES_OPTION)
	                    {
	                     String chinese=语文.getText();
	                     String english=英语.getText();
	                     String math=数学.getText();
	                     学生成=new StudentG();
	                     学生成.setNumber(number);
	                     学生成.setChinese(chinese);
	                     学生成.setEnglish(english);
	                     学生成.setMath(math);
	                       try{
	                           outOne=new FileOutputStream(file);
	                           outTwo=new ObjectOutputStream(outOne);
	                           基本成绩表.put(number,学生成);
	                           outTwo.writeObject(基本成绩表);
	                           outTwo.close();
	                           outOne.close();
	                           学号.setText(null);
	                           语文.setText(null);                                
	                           数学.setText(null);
	                           英语.setText(null);
	                          }
	                       catch(Exception ee)
	                          { 
	                           System.out.println(ee);
	                          }
	                   
	                   }
	                 }
	            }
	        else
	            { 
	              String warning="必须要输入学号!";
	              JOptionPane.showMessageDialog(this,warning,"警告",JOptionPane.WARNING_MESSAGE);
	            }
	      } 
	    if(e.getSource()==重置)
	      { 
	    	学号.setText(null);
            语文.setText(null);                                
            数学.setText(null);
            英语.setText(null);
	      }
	    if(e.getSource()==退出)
	    {
	    	this.dispose();
	    }
   }
}