设计模式实验1 策略模式

1实验报告课程：设计模式实验学期：2010-2011学年第一学期任课教师：专业：学号：姓名：成绩：实验1策略模式1.题目:在教材25页上，有一堆杂乱的类与接口，选取自一个动作冒险游戏。我们能看到代表游戏角色的类和角色可以使用的武器行为的类。每个角色一次只能使用一种武器，但是可以在游戏的过程中换武器，使用策略模式完成实验要求。2.模式设计的UML类图：3.程序源代码：（1）角色抽象类Character.java:publicabstractclassCharacter{WeaponBehaviorweaponBehavior;publicCharacter(){};publicabstractvoiddisplay();publicvoidfight()//委托给行为类{weaponBehavior.useWeapon();}2publicvoidsetWeaponBehavior(WeaponBehaviorwb)//设置武器类型{weaponBehavior=wb;}}（2）继承角色抽象类的各个子类：publicclassKingextendsCharacter{publicKing(){weaponBehavior=newSwordBehavior();//初始化武器类型}publicvoiddisplay(){System.out.print(King：);}}publicclassQueenextendsCharacter{publicQueen(){weaponBehavior=newKnifeBehavior();//初始化武器类型}publicvoiddisplay(){System.out.print(Queen：);}}publicclassKnightextendsCharacter{publicKnight(){weaponBehavior=newBowAndArrowBehavior();//初始化武器类型}publicvoiddisplay(){System.out.print(Knight：);}}publicclassTrollextendsCharacter{publicTroll(){weaponBehavior=newAxeBehavior();//初始化武器类型}publicvoiddisplay(){System.out.print(Troll：);}}3（3）武器行为的接口WeaponBehavior.java：publicinterfaceWeaponBehavior{publicvoiduseWeapon();}（4）实现武器行为接口的各个子类：publicclassAxeBehaviorimplementsWeaponBehavior{publicvoiduseWeapon(){System.out.println(用斧头砍劈！(AxeBehavior));}}publicclassBowAndArrowBehaviorimplementsWeaponBehavior{publicvoiduseWeapon(){System.out.println(用弓箭射击!（BowAndArrowBehavior）);}}publicclassKnifeBehaviorimplementsWeaponBehavior{publicvoiduseWeapon(){System.out.println(用匕首刺杀!（KnifeBehavior）);}}publicclassSwordBehaviorimplementsWeaponBehavior{publicvoiduseWeapon(){System.out.println(用宝剑刺杀!（SwordBehavior）);}}（5）角色打斗的主类CharacterFight.java：publicclassCharacterFight{publicstaticvoidmain(String[]args){Characterking=newKing();Characterqueen=newQueen();Characterknight=newKnight();Charactertroll=newTroll();king.display();4System.out.print(妖怪过来了，让我);king.fight();queen.display();System.out.print(我手里有匕首，我);queen.fight();troll.display();System.out.print(哈哈，我不怕你们，我);troll.fight();knight.display();System.out.print(国王小心，让我);knight.fight();king.display();System.out.print(你的射击水平太差了，还是让我来吧，我);king.setWeaponBehavior(newBowAndArrowBehavior());//更换武器king.fight();troll.display();System.out.print(哈哈，你们完蛋了，我也有弓箭，);troll.setWeaponBehavior(newBowAndArrowBehavior());//更换武器troll.fight();king.display();System.out.println(骑士，用你的斧头啊！给我使劲劈死他。);knight.display();System.out.print(是，国王，妖怪，拿命来吧！);knight.setWeaponBehavior(newAxeBehavior());//更换武器knight.fight();troll.display();System.out.println(啊啊...,你的斧头还厉害啊，我败了。);}}