云大设计模式实验3(装饰者模式).doc

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1、云南大学软件学院实验报告课程：设计模式学期：2012-2013学年第一学期任课教师：陆歌浩专业：软件工程学号：姓名：孙金文成绩：实验3装饰者模式一、实验目的1.熟悉装饰者模式2.运用装饰者模式编制简单的java程序二、实验内容类图：实验代码：packageheadfirst.decorator;importjava.awt.Container;importjava.awt.Dimension;importjava.awt.GridLayout;importjava.awt.Panel;importjava.awt.Toolkit;importjava

2、.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjavax.swing.JButton;importjavax.swing.JComboBox;importjavax.swing.JFrame;importjavax.swing.JLabel;importjavax.swing.JPanel;publicclassEatFood{publicstaticvoidmain(String[]args){FoodFramefoodFrame=newFoodFrame();fo

3、odFrame.setSize(400,450);foodFrame.setLocation(FoodFrame.src.width/2-foodFrame.getWidth()/2,FoodFrame.src.height/2-foodFrame.getHeight()/2);foodFrame.setVisible(true);}}classFoodFrameextendsJFrameimplementsActionListener{staticDimensionsrc=Toolkit.getDefaultToolkit().getScreenS

4、ize();Restaurantfood;JComboBoxcomboBox;JButton[]seasoning;JLabelfoodName,flavouring,price;String[]tiaoliao={"鸡肉(2元)","牛肉(2.5元)","杂酱(1.5元)","酱油（免费）","醋（免费）","辣椒（免费）"};String[]str={"粗米线(6元)","细米线(7元)","面条(6元)"};publicFoodFrame(){super("米线店结账系统（孙金文）");this.setDefaultCloseOperation

5、(JFrame.EXIT_ON_CLOSE);setFoodWindow();}privatevoidsetFoodWindow(){Containerct=this.getContentPane();ct.setLayout(newGridLayout(6,1));Panelp1=newPanel();p1.add(newJLabel("主食："));comboBox=newJComboBox(str);p1.add(comboBox);comboBox.addActionListener(this);ct.add(p1);ct.add(newJL

6、abel("调料选择："));food=newThinRiceNoodle();seasoning=newJButton[tiaoliao.length];JPaneljp2=newJPanel();for(inti=0;i

7、nothing"));ct.add(price=newJLabel("总价格为："+food.cost()));}publicvoidactionPerformed(ActionEvente){if(e.getSource().equals(comboBox)){if(comboBox.getSelectedItem().equals("细米线(7元)")){food=newThinRiceNoodle();}elseif(comboBox.getSelectedItem().equals("粗米线(6元)")){food=newThickRiceN

8、oodle();}elseif(comboBox.getSelectedItem().equals("面条(