第16次作业

//题目1：编写一个应用程序，利用Java多线程机制，实现时间的同步输出显示。

import java.util.Date;

public class Clock {

    public static void main(String[] args) {
        new Thread(new time()).start();;

    }

    public static void tick(Runnable runnable) {
        
        Date nowdata=new Date();
        while (true) {
            
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.println(nowdata);
        
        }
    }
}            

题目2：编写一个应用程序，利用Java多线程机制，实现猜数字游戏（随机数范围0~100之间的整数）。

public class test {
    public static void main(String[] args) {
        Number number = new Number();
        number.beicai2.start();
        number.caishu2.start();
    }

class Number implements Runnable {
    int beicai1,caishu1,bj;
    Thread beicai2,caishu2;
    boolean cai = false,sjshu = false;
    public Number() {
        beicai2 = new Thread(this);
        caishu2 = new Thread(this);
    }
    public void run(){
        while(true) {
            panduan();
            if(bj == 3){
                return;
            }
        }
    }
    public synchronized void panduan(){
        if(Thread.currentThread() == beicai2 && sjshu == false){
            beicai1 = (int)(Math.random()*100) + 1;
            System.out.println("猜数小游戏开始！" );
            sjshu = true;
            cai = true;
        }
        if(Thread.currentThread() == beicai2){
            while(cai == true){
                try {
                    wait();
                } catch (InterruptedException e) {}
            }
            if(beicai1 > caishu1){
                bj=1;
                System.out.println("小了");
            }else if (beicai1 < caishu1){
                bj=2;
                System.out.println("大了");
            }else{
                bj=3;
                System.out.println("猜对了");
            }
            cai = true;
            notifyAll();
        }
        if(Thread.currentThread() == caishu2){
            while(cai == false){
                try {
                    wait();
                } catch (InterruptedException e) {}
            }
            Scanner reader=new Scanner(System.in);
            if(bj == 1||bj==2){
                caishunumber = reader.nextInt();
                System.out.println("输入的数是：" + caishunumber);
            }
 
            cai = false;
        }
        notifyAll();
    }
}