一个简单的EJB实例.用DB2连接.JSP页面.很好用.供大家学习

				package salesdb;
				/**
				 * Local Home interface for Enterprise Bean: Purchase
				 */
				public interface PurchaseLocalHome extends javax.ejb.EJBLocalHome {
					/**
					 * Creates an instance from a key for Entity Bean: Purchase
					 */
					public salesdb.PurchaseLocal create(java.lang.Long purchaseid)
						throws javax.ejb.CreateException;
					/**
					 * Finds an instance using a key for Entity Bean: Purchase
					 */
					public salesdb.PurchaseLocal findByPrimaryKey(
						salesdb.PurchaseKey primaryKey)
						throws javax.ejb.FinderException;
					/**
					 * Creates an instance from a key for Entity Bean: Purchase
					 */
					public salesdb.PurchaseLocal create(
						java.lang.Long purchaseid,
						java.lang.String timestmp)
						throws javax.ejb.CreateException;
				}