xxx.java

多线程是JAVA的难点

public class XXX
{
  static int tickets=100;
  public static void main(String [] args)
  {
     saleone one=new saleone(tickets);
     one.start();
     saletwo two=new saletwo(tickets);
     two.start();
     salethree three=new salethree(tickets);
     three.start();
     salefour four=new salefour(tickets);
     four.start();
  }
}

class saleone extends Thread
{
  int tickets;
  public saleone(int tickets)
  {
     this.tickets=tickets;
  }
  public void run()
  {
     while(true)
     {   
         if(tickets>0&&tickets<=25)
         System.out.println("First Window: "+tickets--);
         if(tickets==0)
         System.exit(0);

     }
  }
}

class saletwo extends Thread
{
  int tickets;
  public saletwo(int tickets)
  {
     this.tickets=tickets;
  }
  public void run()
  {
     while(true)
     {   
         if(tickets>26&&tickets<=50)
         System.out.println("Second Window: "+tickets--);
     }
  }
}

class salethree extends Thread
{
  int tickets;
  public salethree(int tickets)
  {
     this.tickets=tickets;
  }
  public void run()
  {
     while(true)
     {   
         if(tickets>51&&tickets<=75)
         System.out.println("Third Window: "+tickets--);
     }
  }
}

class salefour extends Thread
{
  int tickets;
  public salefour(int tickets)
  {
     this.tickets=tickets;
  }
  public void run()
  {
     while(true)
     {   
         if(tickets>75&&tickets<=100)
         System.out.println("Forth Window: "+tickets--);
     }
  }
}