trader.java

java的一系列产品中包括jsme,jmse,j2ee,本文件提供j2ee实现的源代码.

package stocktrader;

import javax.ejb.*;
import java.rmi.RemoteException;

public interface Trader extends EJBObject {

  /**
   * Buys shares of a stock for a named customer.
   */
  public  TraderResult buy(String customerName, String stockSymbol, int shares)
    throws ProcessingErrorException, RemoteException;

  /**
   * Sells shares of a stock for a named customer.
   */
  public TraderResult sell(String customerName, String stockSymbol, int shares)
    throws ProcessingErrorException, RemoteException;

  /**
   * Returns the current balance of a trading session.
   */
  public double getBalance() throws RemoteException;

}