package com.loaderman.syn;

 

public class Demo_Ticket {

 

   /**

    * 需求:铁路售票,一共100张,通过四个窗口卖完.

    */

   public static void main(String[] args) {

      new Ticket().start();

      new Ticket().start();

      new Ticket().start();

      new Ticket().start();

   }

 

}

 

class Ticket extends Thread {

   private static int ticket = 100;

   //private static Object obj = new Object();    //如果用引用数据类型成员变量当作锁对象,必须是静态的

   public void run() {

      while(true) {

         synchronized(Ticket.class) {

            if(ticket <= 0) {

               break;

            }

            try {

                Thread.sleep(10);           //线程1睡,线程2睡,线程3睡,线程4睡

            } catch (InterruptedException e) {

                

                e.printStackTrace();

            }

            System.out.println(getName() + "...这是第" + ticket-- + "号票");

         }

      }

   }

}

package com.loaderman.syn;

 

public class Demo_Ticket {

 

   /**

    * @param args

    * 火车站卖票的例子用实现Runnable接口

    */

   public static void main(String[] args) {

      MyTicket mt = new MyTicket();

      new Thread(mt).start();

      new Thread(mt).start();

      new Thread(mt).start();

      new Thread(mt).start();

      

      /*Thread t1 = new Thread(mt);           //多次启动一个线程是非法的

      t1.start();

      t1.start();

      t1.start();

      t1.start();*/

   }

 

}

 

class MyTicket implements Runnable {

   private int tickets = 100;

   @Override

   public void run() {

      while(true) {

         synchronized(this) {

            if(tickets <= 0) {

                break;

            }

            try {

                Thread.sleep(10);           //线程1睡,线程2睡,线程3睡,线程4睡

            } catch (InterruptedException e) {

                

                e.printStackTrace();

            }

            System.out.println(Thread.currentThread().getName() + "...这是第" + tickets-- + "号票");

         }

      }

   }

}