设计模式之备忘录模式

 

public class MementoTest1{public static void main(String[] args){GameRole lixiaoyao = new GameRole();lixiaoyao.GetInitState();lixiaoyao.StateDisplay();RoleStateCaretaker stateAdmin = new RoleStateCaretaker();stateAdmin.setMemento(lixiaoyao.SaveState());lixiaoyao.Fight();lixiaoyao.StateDisplay();lixiaoyao.RecoveryState(stateAdmin.getMemento());lixiaoyao.StateDisplay();System.out.println();}}class GameRole{private int vit;public int getVitality(){return vit;}public void setVitality(int vit){this.vit = vit;}private int atk;public int getAttack(){return atk;}public void setAttack(int atk){this.atk = atk;}private int def;public int getDefense(){return def;}public void setDefense(int def){this.def = def;}public void StateDisplay(){System.out.println("角色当前状态");System.out.println("体力："+this.vit);System.out.println("攻击力："+this.atk);System.out.println("防御力："+this.def);System.out.println();}public void GetInitState(){this.vit = 100;this.atk = 100;this.def = 100;}public void Fight(){this.vit = 0;this.atk = 0;this.def = 0;}public RoleStateMemento SaveState(){return (new RoleStateMemento(vit,atk,def));}public void RecoveryState(RoleStateMemento memento){this.vit = memento.getVitality();this.atk = memento.getAttack();this.def = memento.getDefense();}}class RoleStateMemento{private int vit;private int atk;private int def;public RoleStateMemento(int vit,int atk,int def){this.vit = vit;this.atk = atk;this.def = def;}public int getVitality(){return vit;}public void setVitality(int vit){this.vit = vit;}public int getAttack(){return atk;}public void setAttack(int atk){this.atk = atk;}public int getDefense(){return def;}public void setDefense(int def){this.def = def;}}class RoleStateCaretaker{private RoleStateMemento memento;public RoleStateMemento getMemento(){return memento;}public void setMemento(RoleStateMemento memento){this.memento = memento;}}