实验三 装饰模式和状态模式.docVIP

南昌大学实验报告 学生姓名： 崔圆圆 学 号： 6100510079 专业班级： 航天102 实验类型： 验证 综合 设计 创新 实验日期：201359实验成绩： 实验3 装饰模式和状态模式一、实验目的（1）学习和掌握装饰模式（2）学习和掌握状态模式（3）学习和掌握使用这些模式解决实际问题二、实验内容1、请使用状态模式实现下列编程要求：为了美化图片，请根据需要给图片增加背景图片修饰、边框文本描述等修饰。运行结果如图1所示。2、某银行系统定义的信用卡账号有三种状态：（1）如果账户（Account）中的余额（balance）大于等于0，此时账户的状态为正常用户状态，账号可以存款和取款操作；（2）如果账户中的余额小于0，并且大于等于-1000，则账户为欠费状态，此时可以向该账户存款，也可以从该账户取款；（3）如果账户中的余额小于-1000，那么账户的状态为透支状态，此时，用户只能向该账户存款，不能再从中取款。请结合状态模式，实现账户状态的转换问题。用户只需要换行简单的三、实验要求用UML图表示上述练习的程序结构，以及各个类之间的相互关系。四、实验环境1、PC微机；2、DOS操作系统或 Windows 操作系统；3、jdk程序集成环境Eclipse 五、实验步骤1、先安装好jdk；2、配置环境变量；3、书写java程序；4、运行程序，查看结果。六、源代码、测试数据及UML图实验一1.1 UML图：1.2程序代码：package decorator;import java.awt.Graphics;import java.awt.Image;import javax.swing.ImageIcon;import javax.swing.JPanel;public abstract class VisualPicture extends JPanel/* * */private static final long serialVersionUID = 1L;public static Image myImage=new ImageIcon(src/decorator/Penguins.jpg).getImage();public abstract void draw(Graphics g);/package decorator;import java.awt.*;public class Picture extends VisualPicture/* * */private static final long serialVersionUID = 1L;public void paint(Graphics g)this.draw(g);Overridepublic void draw(Graphics g) g.drawImage(VisualPicture.myImage, 0,0, 500,500, this);/package decorator;import java.awt.Graphics;public abstract class Decorator extends VisualPicture/* * */private static final long serialVersionUID = 1L;public abstract void draw(Graphics g);/package decorator;import java.awt.Color;import java.awt.Graphics;public class BorderDecorator extends Decorator/* * */private static final long serialVersionUID = 1L;private VisualPicture vpic;public BorderDecorator(VisualPicture vpic)this.vpic=vpic; public void paint(Graphics g)this.draw(g);Overridepublic void draw(Graphics g) vpic.draw(g);g.setColor(Color.red); g.drawRect(7, 12,483,475);g.drawRect(5, 10,487,480);g.drawRect(2, 5,494,490);/package decorator;import java.awt.Color;import java.awt.Font;import java.awt.Graphics;public class WordsDecorator extends Decorator/* * */private static final long serialVersionUID = 1L; private VisualPicture vpic; private Font myFont=new Font(南极企鹅,Font.BOLD,36);public WordsDecorator(VisualPicture vpic)this.vpic=vpic; public void paint(Graphics g)this.draw(g);Overridepublic void draw(Graphics g) vpic.draw(g);g.setFont(myFont);g.setColor(Color.red);g.drawString(myFont.getName(), getX()+50, getY()+70);/package decorator;import javax.swing.JFrame;public class Text extends JFrame/* * */private static final long serialVersionUID = 1L;public Text()add(new BorderDecorator(new WordsDecorator(new Picture(); public static void main(String args) Text frame = new Text(); frame.setTitle(图片装饰);frame.setLocationRelativeTo(null); frame.pack();frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setVisible(true); 1.3 实验结果 实验二2.1 UML图2.2 程序代码：package state;public abstract class State static float amount=1000;public abstract void deposit(float account);/存款public abstract void withdraw(float account);/取款/package state;public class NormalState extends StateOverridepublic void deposit(float account) State.amount+=account;System.out.println(存款+account+后您的剩余金额为：+State.amount );Overridepublic void withdraw(float account) State.amount-=account;System.out.println(取款+account+后您的剩余金额为：+State.amount );/package state;public class OweState extends StateOverridepublic void deposit(float account) State.amount+=account;System.out.println(您现在处于欠费状态，存款+account+后的剩余金额为：+State.amount );Overridepublic void withdraw(float account) State.amount-=account;System.out.println(您现在处于欠费状态，取款+account+后的剩余金额为：+State.amount );/package state;public class OverdrawState extends StateOverridepublic void deposit(float account) State.amount+=account;System.out.println(您现在处于透支状态，存款+account+后的剩余金额为：+State.amount );Overridepublic void withdraw(float account) System.out.println(您现在处于透支状态，不能取款，剩余金额为：+State.amount );/package state;public class CustomerAccount private State state=new NormalState();public void deposit(float account) state.deposit(account); if(State.amount=0) state=new NormalState(); else if(State.amount=-1000) state=new OweState(); else state=new OverdrawState();public void withdraw(float account)state.withdraw(account);if(State.amount=0) state=new NormalState(); else if(State.amount=-1000) state=new OweState(); else state=new OverdrawState();/package state;public class CustomerText public static void main(String args)CustomerAccount ca=new CustomerAccount();ca.wit