一个使用java 写的进销存代码 使用了ejb 等技术 是学习j2ee的好

				package stockmanagementpro;
				
				import javax.ejb.*;
				
				abstract public class GoodsBean implements EntityBean {
				  EntityContext entityContext;
				  public java.lang.String ejbCreate(java.lang.String goodsBarCode, int categoryId, java.lang.String goodsName, java.lang.String goodsNickName, java.lang.String goodsAssistantName, java.lang.String goodsPYName, java.lang.String unit, java.lang.String specification, java.lang.String producer, int upperLimit, int lowerLimit, double salePrice, double discount) throws CreateException {
				    setGoodsBarCode(goodsBarCode);
				    setCategoryId(categoryId);
				    setGoodsName(goodsName);
				    setGoodsNickName(goodsNickName);
				    setGoodsAssistantName(goodsAssistantName);
				    setGoodsPYName(goodsPYName);
				    setUnit(unit);
				    setSpecification(specification);
				    setProducer(producer);
				    setUpperLimit(upperLimit);
				    setLowerLimit(lowerLimit);
				    setSalePrice(salePrice);
				    setDiscount(discount);
				    return null;
				  }
				
				  public void ejbPostCreate(java.lang.String goodsBarCode, int categoryId, java.lang.String goodsName, java.lang.String goodsNickName, java.lang.String goodsAssistantName, java.lang.String goodsPYName, java.lang.String unit, java.lang.String specification, java.lang.String producer, int upperLimit, int lowerLimit, double salePrice, double discount) throws CreateException {
				  }
				  public void ejbRemove() throws RemoveException {
				  }
				  public abstract void setGoodsBarCode(java.lang.String goodsBarCode);
				  public abstract void setCategoryId(int categoryId);
				  public abstract void setGoodsName(java.lang.String goodsName);
				  public abstract void setGoodsNickName(java.lang.String goodsNickName);
				  public abstract void setGoodsAssistantName(java.lang.String goodsAssistantName);
				  public abstract void setGoodsPYName(java.lang.String goodsPYName);
				  public abstract void setUnit(java.lang.String unit);
				  public abstract void setSpecification(java.lang.String specification);
				  public abstract void setProducer(java.lang.String producer);
				  public abstract void setUpperLimit(int upperLimit);
				  public abstract void setLowerLimit(int lowerLimit);
				  public abstract void setSalePrice(double salePrice);
				  public abstract void setDiscount(double discount);
				  public abstract java.lang.String getGoodsBarCode();
				  public abstract int getCategoryId();
				  public abstract java.lang.String getGoodsName();
				  public abstract java.lang.String getGoodsNickName();
				  public abstract java.lang.String getGoodsAssistantName();
				  public abstract java.lang.String getGoodsPYName();
				  public abstract java.lang.String getUnit();
				  public abstract java.lang.String getSpecification();
				  public abstract java.lang.String getProducer();
				  public abstract int getUpperLimit();
				  public abstract int getLowerLimit();
				  public abstract double getSalePrice();
				  public abstract double getDiscount();
				  public void ejbLoad() {
				  }
				  public void ejbStore() {
				  }
				  public void ejbActivate() {
				  }
				  public void ejbPassivate() {
				  }
				  public void unsetEntityContext() {
				    this.entityContext = null;
				  }				  public void setEntityContext(EntityContext entityContext) {				    this.entityContext = entityContext;				  }				}