只要是new一个共享资源就行
runnable (new一个ticket,因为多个线程可以使用一个目标对象)
package ticketThread;
class ticketP
{
int ticket=100;
void sale()
{
this.ticket--;
}
}
class ticket extends Thread
{
private ticketP tk;
public ticket(ticketP tk)
{
this.tk=tk;
}
public void run()
{
synchronized(this.tk)
{
while(tk.ticket>0)
{
System.out.println("sale : " + Thread.currentThread().getName() + " " + tk.ticket);
tk.sale();
}
}
}
public static void main(String[] args)
{
ticketP tk1=new ticketP();
ticket t1=new ticket(tk1);
ticket t2=new ticket(tk1);
ticket t3=new ticket(tk1);
ticket t4=new ticket(tk1);
t1.start();
t2.start();
t3.start();
t4.start();
}
}
synchronized (new一个ticketP,用synchronized对它互斥访问)
class ticket implements Runnable
{
}
private int tk=100;
public void run()
{
while(tk>0)
{
System.out.println("sale : " + Thread.currentThread().getName() + " " +tk--);
}
}
public static void main(String[] args)
{
ticket tk1=new ticket();
Thread t1=new Thread(tk1);
Thread t2=new Thread(tk1);
Thread t3=new Thread(tk1);
Thread t4=new Thread(tk1);
t1.start();
t2.start();
t3.start();
t4.start();
}
}