useraccount.java

开发无状态.有状态的会话Bean,可以结合有电子工业出版社的J2E教材学习

//remote 接口

package banksystem

import javax.ejb.*;
import java.sql.*；
import java.rmi.*;
import java.util.*;

public interface UserAccouter extends javax.ejb.EJBObject{
	public double Balance()throw SQLException,RemoteException;
	public void Withdraw(double amount)throw SQLException,RemoteException;
	public void Deposit(double amount)throw SQLException,RemoteException;
	public void Transfer(String told,double amount)throw SQLException,RemoteException;
}