关于JDK5交通灯模拟控制系统

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关于JDK5交通灯模拟控制系统

本系统由 , , 和组成。

package fic;

public enum Lamp {

//前进 ,左拐 ,右拐

S2N("N2S","S2W",false), S2W("N2E","E2W",false), S2E(null,null,true),

E2W("W2E","E2S",false), E2S("W2N","S2N",false), E2N(null,null,true),

N2S(null,null,false) , N2E(null,null,false), N2W(null,null,true),

W2E(null,null,false) , W2N(null,null,false), W2S(null,null,true);

String opposite;

String next;

boolean lighted;

//构造函数:初始化当前灯

private Lamp(String opposite,String next,boolean lighted){

site = opposite;

= next;

ted = lighted;

}

//返回当前灯的状态

public boolean isLighted(){return lighted;}

public void light(){

ted = true;

if(opposite != null){

eOf(opposite)。light();

}

tln(name() + "is Green. Soon there will be cars crossed the street at six deractions.");

}

public Lamp blackout(){

//关闭当前灯 : 设为false

ted = false;

Lamp nextLamp = null;

if(opposite != null){eOf(opposite)。blackout();}

//检查下一个灯并启动它

if(next != null){

nextLamp = eOf(next);

tln(name() + " to the " + next + " 's light is Green.");

t();

}

return nextLamp;

}

}

package fic;

import utors;

import Unit;

public class LampController {

private Lamp currentLamp;

public LampController(){

currentLamp = Lamp.S2N;

t();

//启动一个线程 : 每十秒将当前灯设置为红

cheduledThreadPool(1)。scheduleAtFixedRate(

new Runnable() {

public void run() {

currentLamp = kout();

}

},

10,

10,

NDS

);

}

}

package fic;

import ;

import yList;

import om;

import utors;

import Unit;

public class Road {

private String name;

private List vehicles = new ArrayList();

public Road(String name){

= name;

//模拟车辆不断随机上路的过程

ingleThreadExecutor()。execute(new Runnable() {

public void run() {

for(int i = 0 ; i < 1000 ;i++){

try {

p((new Random()。nextInt(10) + 1) * 1000);

} catch (InterruptedException e) {

tStackTrace();

}

( + "_" + i);

}

}

});

//每隔一秒检查对应的'灯是否为绿,如果是 ,则放行一辆车,具体操作为从vehicles集合中移除第一辆车。

cheduledThreadPool(1)。scheduleAtFixedRate(

new Runnable() {

public void run() {

if(() > 0){

if(eOf()。isLighted()){

tln(ve(0) + " is traversing");

}

}

}

},

1,

1,

NDS);

}

}

最后在Main方法中启动系统:public static void main(String[] args) {

String[] deractions = {"S2N","S2W","E2W","E2S","N2S","N2E","W2E","W2N","S2E","E2N","N2W","W2S"};

//模拟十二条方向的路线

for(int i = 0 ; i < th; i++){

new Road(deractions[i]);

}

//启动交通灯控制器

new LampController();

}

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