第十六周作业

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。

package zuoyeshiyi;

import java.util.*;

public class xianc {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		new Thread(new time()).start();;
	}

}
class time implements Runnable{
	public void run() {
		while(true) {
		Date nowdata=new Date();
		try {
			Thread.sleep(1000);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			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 kkkkk {
	public static void main(String[] args) {
		Number number = new Number();
		number.beicaishu.start();
		number.caishu.start();
	}
}
class Number implements Runnable {
	int beicainumber,caishunumber,bj;
	Thread beicaishu,caishu;
	boolean cai = false,sjshu = false;
	public Number() {
		beicaishu = new Thread(this);
		caishu = new Thread(this);
	}
	public void run(){
		while(true) {
			panduan();
			if(bj == 3){
				return;
			}
		}
	}
	public synchronized void panduan(){
		if(Thread.currentThread() == beicaishu && sjshu == false){
			beicainumber = (int)(Math.random()*100) + 1;
			System.out.println("猜测随机数小游戏开始！" );
			sjshu = true;
			cai = true;
		}
		if(Thread.currentThread() == beicaishu){
			while(cai == true){
				try {
					wait();
				} catch (InterruptedException e) {}
			}
			if(beicainumber > caishunumber){
				bj=1;
				System.out.println("你猜小了");
			}else if (beicainumber < caishunumber){
				bj=2;
				System.out.println("你猜大了");
			}else{
				bj=3;
				System.out.println("恭喜你，猜对了");
			}
			cai = true;
			notifyAll();
		}
		if(Thread.currentThread() == caishu){
			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("您输入的数是：" + caishunumber);
			}

			cai = false;
		}
		notifyAll();
	}
}