Java tutorial
/* * Copyright 2002-2011 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.apress.prospringintegration.corespring.aop; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class MainAOP { public static void main(String[] args) throws Exception { ApplicationContext app = new ClassPathXmlApplicationContext("ioc_aop.xml"); PurchaseOrderProcessor orderProcessor = app.getBean(PurchaseOrderProcessor.class); PurchaseOrder order = new PurchaseOrder(); order.setItemCost(1000.00f); Receipt receipt = orderProcessor.processPurchaseOrder(order); PurchaseOrderDiscountProcessor orderDiscountProcessor = (PurchaseOrderDiscountProcessor) orderProcessor; Receipt discountedReceipt = orderDiscountProcessor.processDiscountOrder(order, DiscountStrategy.HALF_OFF_ENTIRE); System.out.println(String.format("Total discounted purchase amount (given %s discount): %f ", DiscountStrategy.HALF_OFF_ENTIRE, (discountedReceipt.getPurchaseAmt() - discountedReceipt.getDiscountedAmount()))); } }