Java--多线程处理--模拟车辆进入入收费

package simulation;

import java.util.Random;

class Vehicle implements Runnable{
    private int id;
    private static TollBooth toll =new TollBooth();
    public Vehicle(int id ) {
        this.id=id;
    }
    public void run () {
        //1开始旅程
        System.out.println("Vericle "+(id+1)+"starts journey");
        Random RandGen =new Random();
        int Rnd =RandGen .nextInt(100);
        //2到达收费站
        travel(Rnd);
        System.out.println("Vericle"+(id+1)+"arrives at the toll");
        //3通过收费站useToll方法要么是同步方法，要么是方法中有同步语句块
        toll.useToll(this);
        //4离开收费站
        travel(Rnd);
        //通过桥梁
        
        System.out.println("Vericle"+(id+1)+"has cross the bridge");
    }
    public int getVericleId() {
        return this.id;
        
    }
    public void travel (int time) {
        int limit =500000;
        for(int j=0;j<time;j++) {
            for(int k=0;k<limit;k++) {    
            }
        }
    }
}
//收费站
class TollBooth {
    boolean inUse;
    public TollBooth() {
        inUse =false;
    }
    public void useToll(Vehicle vehicle) {
        while(true) {
            if(inUse==false) {
                synchronized (this) {
                    inUse=true;
                    System.out.println("Vericle"+(vehicle.getVericleId()+1)+"enters toolboth ");
                    vehicle.travel(50);
                    System.out.println("Vehicle"+(vehicle.getVericleId()+1)+"exits toolbooth");
                    inUse =false;
                    break;
                }
            }
        }
    }
}
public class Simulate {
    private static int noOfVehicles=5;
    private static Vehicle[] vehicles;
    public static void main(String args[]) {
        try {
            Simulate sm=new Simulate();
            vehicles=new Vehicle[5];
            for(int i=0;i<noOfVehicles;i++) {
                vehicles[i]=new Vehicle(i);
                Thread t=new Thread(vehicles[i]);
                t.start();
                Thread.sleep(10);
            }
        }
        catch(Exception ex) {
            System.out.println(ex);
        }
    }

}

测试结果：