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淘寶店530213測試類Testpublic class Test public static void main(String args) Lift lift=new Lift();new User(lift).gotoFloor();lift.operate();電梯類Liftimport java.util.*;public class Liftboolean doorState=true;/true開,false 關(guān)int currentFloor=1; ArrayList holdList=new ArrayList();LiftState state;public Lift()state=new Hold(this);public void setDoorState(boolean doorstate)this.doorState=doorstate;public void setState(LiftState state)this.state=state;public LiftState getState() return this.state;public void openDoor()setDoorState(true);System.out.println (電梯門已開,請抓緊進出!);public void closeDoor()setDoorState(false);System.out.println (電梯門已關(guān),即將運行!);public void move(int from, int to) if(fromto) System.out.println(電梯現(xiàn)在+from+樓,即將+this.state.stateName+到+to+樓); for(int i=from+1;ito) System.out.println(電梯現(xiàn)在+from+樓,即將+this.state.stateName+到+to+樓); for(int i=from-1;ito;i-) System.out.println(已到達+i+樓,不停); this.currentFloor=i-1; try Thread.sleep(1000); catch (InterruptedException e) / TODO Auto-generated catch block e.printStackTrace(); public int getNextFloor()return (Integer)(holdList.iterator().next();public void operate()this.state.operate();狀態(tài)類LiftStateabstract class LiftStateprotected Lift lift;String stateName;public LiftState(LiftState oldstate)this.lift=oldstate.lift;public LiftState()public void openDoor()lift.setDoorState(true);System.out.println (電梯門已開,請抓緊進出!);public void closeDoor()lift.setDoorState(false);System.out.println (電梯門已關(guān),即將運行!);public abstract void operate();使用者類Userimport java.io.*;import java.util.Scanner;public class User Lift lift;public User(Lift lift)this.lift=lift;public void gotoFloor()Scanner sc = new Scanner(System.in);/獲取鍵盤輸入 int nextFloor=sc.nextInt();lift.holdList.add(nextFloor);System.out.println(有人要去+nextFloor+樓);就緒類Holdimport java.util.Currency;public class Hold extends LiftStatepublic Hold(Lift lift)this.lift=lift;this.stateName=就緒;public Hold(LiftState state) super(state); this.stateName=就緒;Overridepublic void operate() openDoor();/ TODO Auto-generated method stubtry Thread.currentThread().sleep(2000); catch (InterruptedException e) / TODO Auto-generated catch blocke.printStackTrace();closeDoor();int nextFloor=this.lift.getNextFloor();System.out.println(next:+nextFloor+-curent:+this.lift.currentFloor);if(nextFloorthis.lift.currentFloor)this.lift.setState(new RunUp(this);this.lift.operate();else if(nextFloorthis.lift.currentFloor) this.lift.setState(new RunDown(this); this.lift.operate();下降類class RunDown extends LiftStatepublic RunDown(LiftState state)super(state);this.stateName=上升;public void openDoor()lift.setDoorState(false);System.out.println (上升狀態(tài)下嚴禁開門!);public void closeDoor()lift.setDoorState(false);System.out.println (上升狀態(tài)下嚴禁開門!);Overridepublic void operate() / TODO Auto-generated method stubint nextFloor=(Integer)this.lift.holdList.iterator().next();this.lift.move(this.lift.currentFloor, nextFloor);this.lift.setState(new Hold(this);System.out.println(電梯現(xiàn)在已經(jīng)到達+nextFloor+樓);this.lift.operate();上升類class RunUp extends LiftStatepublic RunUp(LiftState state)super(state);this.stateName=上升;public void openDoor()lift.setDoorState(false);System.out.println (上升狀態(tài)下嚴禁開門!);public void closeDoor()lift.setDoorState(false);System.out.println (上升狀態(tài)下嚴禁開門!);Overridepublic void operate() / TODO Auto-generated method stubint nextFloor=(Integer)this.lift.holdList.iterator().next();/System.out.println (下一個:+nextFloor);this.lift.move(this.lift.currentFloor, nextFloor);this.lift.setState(new Hold(this); System.out.println(this.lift.state.stateName);System.out.println(電梯現(xiàn)在已經(jīng)到達+this.lift.currentFloor+樓);this.lift.holdList.remove(0);this.lift.operate();故障類class Broken extends LiftStatepublic Broken(LiftState state)super(state);this.stateName=故障;public void openDoor()lift.setDoorState(false);System.out.println (有故障!暫停使用!);public void closeDoor()lift.setDoorState(false);System.out.println (超重!);public void repair()this.lift.setState(new Hold(this);System.out.println (故障已排除!電梯準備就緒);Overridepublic void operate() / TODO Auto-generated method stubSystem.out.println (有故障!暫停使用!);/測試類public class Test public static void main(String args) Car car=new Car();Walker walker=new Walker();WalkLight wlight=new WalkLight();RoadLight rLight=new RoadLight();wlight.addObserver(walker);rLight.addObserver(car);rLight.addObserver(wlight);rLight.changeColor();交通燈類import java.util.*;public abstract class TrafficLight boolean currentColor=true; /true 綠色,false紅色String lighttype; ArrayList observerList=new ArrayList(); public void addObserver(TrafficObserver observer) if(!observerList.contains(observer) observerList.add(observer); public abstract void changeColor();public void hold(long time)try Thread.currentThread().sleep(time); catch (InterruptedException e) / TODO Auto-generated catch blocke.printStackTrace();public void yellowHold(long time)System.out.println (lighttype+(currentColor?綠:紅)+燈結(jié)束!馬上變黃.);/this.road.paintLightColor(road.getGraphics(),Color.YELLOW,lighttype);System.out.println (lighttype+現(xiàn)在是黃燈! 2秒后變+(currentColor?紅:綠)+.);hold(time);/等2秒 public void lightTime(long time)System.out.println (lighttype+現(xiàn)在是+(currentColor?綠:紅)+燈!15秒后結(jié)束.);for(int i=15;i0;i-)/倒計時15秒System.out.println (lighttype+(currentColor?綠:紅)+燈剩余+i+秒);hold(1000);public void notice() new Thread()public void run()for(TrafficObserver obs:observerList)obs.response(currentColor);/Thread.currentThread().yield(); .start();交通燈觀察者類public interface TrafficObserver public void response(boolean color);道路燈public class RoadLight extends TrafficLightpublic RoadLight()lighttype=機動車道;public void changeColor() / TODO Auto-generated method stubyellowHold(2000);currentColor=!currentColor;notice();lightTime(20000);人行道燈public class WalkLight extends TrafficLight implements TrafficObserver public WalkLight()lighttype= 人行道;Overridepublic void changeColor() / TODO Aut

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