状态模式实验报告

1、班级： 学号： 姓名:指导教师：成绩：实验题目：状态模式实验时间:一.实验目的练习并掌握状态模式，理解它的适用场景，掌握如何在实际开发过程中使用这个模式, 并学会分析这个模式的使用效果。二.实验内容图书管理系统中的图书有两种状态：在馆和借出：请用状态模式来实现两种状态的转换。、类图(2) 、时序图(3) 、实现代码(4) 、测试代码1、类图Li bra r)State SLoan() *Retum() *setState()<interface>StateLoan。 RelumQ/n LibraryOutLibraryLoan()| RetumQLoan。 *R®tum(

2、)2、时序图68nlLitxarytnLibrary3x实现代码using System;using System Collections Generic;using SystemLinq;using System .Text;namespace ConsoleApplicationlclass Programpublic interface Statevoid LoanO ; 借岀？的i?方Q?法口i §void Return();/归；还1 的i?方O?法Cii §W 馆Y状血矗态类O 口public class InLibraryState：StateLibrary

3、library;public InLibraryState(Library library)thislibrary = library;public InLibraryState0public void Loan()Console. WriteLineC"借书八:成：功 了 即);library bookloan();librarysetState(library getOutLibrary ():public void Return()Console. WriteLine(/ziV? I1/' - J 如？今？还馆Y中D,辺操作九 A有即误 r :借出?状人区态弋类0-0p

4、ublic class OutLibraryState:StateLibrary library;public OutLibrar>rState(Library library)this1ibrary = library;public OutLibrar5rState0 public void Loan0Console. WriteLineCir?ir - !如？今?借 出?了绍©?操作心 A有®D&：;public void Return0Console. WriteLine C还 1 书。:成：功 | 了歼);library bookreturn();li

5、brary setState(library getlnLibrary 0);/图“？书；馆Y类口Opublic class LibraryState inlibrary;State outlibrary;State state ;int Count = 0;public Library(int bookCount)inlibrary = new InLibraryState(this):outlibrary = new OutLibraryState(this);this .Count = bookCount;if (bookCount > 0)state = inlibrary;pu

6、blic void LoanOstate Loan ();public void RetixrnOstate Return 0;public void setState(State state)thisstate =state;public State getlnLibrary()return inlibrary ;public State getOutLibrary()return outlibrary;public int getbookCount 0return Count;public void bookloan()if (Count != 0)Count = Count1;publi

7、c void bookreturn()Count = Count + 1;public void print(Library library)if (librarygetbookCount() > 0)Console. WriteLine(zz ? 7* :如 伍图*?书:馆Y中D");elseConsole. WriteLineC? 15°；已。？被A?借 "出?");Console ReadKey0;4.测试代码class teststatic void Main(string. args)Library library = new Library(1);library LoanO ;library print(library);library Return0;library print(library);Console. WriteLine("*); libr