shoppingcart.java

想学习EJB的同学

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package ejb3.day2;

import java.util.List;

/**
 *
 * @author user
 */
public interface ShoppingCart {
    void add(SalesLine line);
    void remove(SalesLine line);
    List<SalesLine> list();
    float cost();
    float placeOrder();
    void init();
}