readatmid.java

课程设计：ATM Project源码

/* Copyright 2002 MonkeyStar SoftWare, Inc. All rights reserved.
 * The Start of the ATM Project for Auto Services
 * @author Wujun, Student Number:09800134
 */
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
public class ReadAtmID
{     
     private long CurNumber;
     private File CardFile= new File("A:\\atm.sys");
     private long CurCardID;
     Component f;
     public ReadAtmID(Component ComponentF)
     {
     	f=ComponentF;
     }
     public long ReadCardID(MainFrame MainF)
     {
     	try
     	{
        	RandomAccessFile AtmCard=new RandomAccessFile(CardFile,"r");	
         	AtmCard.seek(0);
     	    CurCardID=AtmCard.readLong();
     	    MainF.payState(true);
     	}
        catch(FileNotFoundException e)
        { JOptionPane.showMessageDialog(f, "读卡出错!请检查ATM卡是否已经正确插入!", "警告", JOptionPane.ERROR_MESSAGE);
        }
        catch(IOException e)
        { JOptionPane.showMessageDialog(f, "读卡出错!请检查ATM卡是否已经正确插入!", "警告", JOptionPane.ERROR_MESSAGE);
        }
     	return CurCardID;
     }
}