rw.java

银行系统

//客户数据的存取
import java.util.*;
import java.io.*;

public class rw {
	Vector v = new Vector(); 

	public void read(String road)throws Exception{
			       //创建一个集合类，保存数据
		RandomAccessFile raf = new RandomAccessFile(road, "rw");           //加载数据
		do{
			String id = raf.readUTF();
		  String password = raf.readUTF();
			double money = raf.readDouble();
			String name = raf.readUTF();
			Csm t= new Csm(id,password,money,name);
			v.add(t);
		}while(true);
	}
	
	public void write(int pos)throws Exception{
		RandomAccessFile raf2 = new RandomAccessFile("e:\\TD.dat", "rw");		//保存数据
		Csm t = (Csm)v.get(pos);
			      
		raf2.writeUTF(t.getID());
		raf2.writeUTF(t.getPassword());
		raf2.writeDouble(t.getMoney());
		raf2.writeUTF(t.getName());			
		
	}
}