2019.3.9作业

1、模拟多人爬山

package com.work.climb;

public class ClimbRunnable extends Thread{
	
	private int time;
	private int num;
	
	public ClimbRunnable() {}
	
	public ClimbRunnable(int time, String name,int num) {
		super(name);
		this.time = time;
		this.num = num;
	}

	public void run() {
		while(this.num>0) {
			try {
				Thread.sleep(this.time);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
			System.out.println(Thread.currentThread().getName()+"已爬100米");
			this.num = this.num - 1;
		}
		System.out.println(Thread.currentThread().getName()+"爬到山顶！");
	}
	
	public static void main(String[] args) {
		ClimbRunnable c1 = new ClimbRunnable(200,"年轻人",10);
		ClimbRunnable c2 = new ClimbRunnable(500,"老年人",10);
		
		c1.start();
		c2.start();
	}
}

　　结果示例：

 

2、模拟叫号看病

 

package com.java.doctor;

public class DoctorThread extends Thread{

	private int number;//看病人数

	public DoctorThread() {
		super();
	}

	public DoctorThread(String name,int number) {
		super(name);
		this.number = number;
	}

	public int getNumber() {
		return number;
	}

	public void setNumber(int number) {
		this.number = number;
	}

	public void run() {
		for(int i = 1;i<=this.number;i++) {
			System.out.println(Thread.currentThread().getName()+":"+i+"号病人正在看病！");
		}
	}

	public static void main(String[] args) {
		DoctorThread special = new DoctorThread("特需号",10);
		//将主进程重命名为普通号
		Thread.currentThread().setName("普通号");
//		special.setPriority(10);
//		ordinary.setPriority(1);
		special.start();
		
		try {
			for(int i = 1;i<=50;i++) {
				//如果普通号到49号后，特需号还未看完，先暂停普通号，看完特需号再继续
				if(i == 49) {
					special.join();
				}
				System.out.println(Thread.currentThread().getName()+":"+i+"号病人正在看病！");
			}
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
	}
}

　　结果示例：

 

3、模拟接力赛跑

package com.java.race;
/**
 * 模拟接力赛跑
 * @author Administrator
 *
 */
public class Race implements Runnable{
	private int length = 1000; //剩余赛程

	public void run() {
		String name = Thread.currentThread().getName();
		while(true) {
			synchronized(this) {
				if(length<=0) {
					break;
				}
				length -= 100;
				try {
					Thread.sleep(200);
				} catch (InterruptedException e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}
				System.out.println(name+"接力!");
				for(int i = 1;i<11;i++) {
					System.out.println(name+"跑了"+i*10+"米");
				}
				
			}
			try {
				Thread.sleep(500);
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
	
	public static void main(String[] args) {
		Race r = new Race();
		Thread t1 = new Thread(r,"1号选手");
		Thread t2 = new Thread(r,"2号选手");
		Thread t3 = new Thread(r,"3号选手");
		Thread t4 = new Thread(r,"4号选手");

		t1.start();
		t2.start();
		t3.start();
		t4.start();
	}
	

}

　　结果示例：

 

4、模拟网站抢票

package com.java.ticket;
/**
 * 模拟网站抢票系统，有三个用户：桃跑跑、黄牛党、张票票，如果是黄牛党只允许抢购一张
 * @author Administrator
 *
 */
public class Ticket implements Runnable{
	
	private int count = 10; //剩余票数
	private int num = 0; //当前用户抢到的第几张票
	
	public void run() {
		String name = Thread.currentThread().getName();
		while(true) {
			//根据sale()方法返回值判断是否为黄牛党，如果是结束线程
			if(sale(name)) {
				break;
			}
		}
	}
	
	public synchronized boolean sale(String name) {
		if(count<=0) {
			return true;
		}
		count--;
		num++;
		try {
			Thread.sleep(100);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
		System.out.println(name+"抢到第"+num+"张票，"+"剩余"+count+"张票。");
		//判断线程名是否为黄牛党，如果是返回true
		if(name.equals("黄牛党")) {
			return true;
		}
		return false;
	}
	
	public static void main(String[] args) {
		Ticket t = new Ticket();
		Thread t1 = new Thread(t,"桃跑跑");
		Thread t2 = new Thread(t,"黄牛党");
		Thread t3 = new Thread(t,"张票票");
		
		t1.start();
		t2.start();
		t3.start();
		
	}
}

　　结果示例：