public class Text {
public static void main(String[] args) {
TicketOfficeText off= new TicketOfficeText();
Thread t1 = new Thread(off);
t1.setName("售票点1");
t1.start();
Thread t2 = new Thread(off);
t2.setName("售票点2");
t2.start();
Thread t3 = new Thread(off);
t3.setName("售票点3");
t3.start();
Thread t4 = new Thread(off);
t4.setName("售票点4");
t4.start();
Thread t5 = new Thread(off);
t5.setName("售票点5");
t5.start();
}
}
class TicketOfficeText implements Runnable{
private int tickets=0;
@Override
public void run() {
// TODO Auto-generated method stub
boolean flag =true;
while(flag)
{
flag=sell();
}
}
//synchronized主要的应用与同步代码快和同步方法；
//下面是同步了整个方法，
//synchronized，保证该方法在执行完毕前不会被另一个线程打断
//这种运行机制叫作同步线程机制。就是同一张票只能被一个售票点卖出
/*public synchronized boolean sell() {
// TODO Auto-generated method stub
boolean flag =true;
if(tickets<100)
{
tickets+=1;
System.out.println(Thread.currentThread().getName()+"：卖出去第："+tickets+"张票");
}else
{
flag =false;
}
try {
Thread.sleep(15);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return flag;
}*/
//下面是同步代码块，只是同步了会操作到共享数据的代码，
//比同步整个方法会更有效率
public boolean sell() {
// TODO Auto-generated method stub
boolean flag =true;
synchronized (this)
{
if(tickets<100)
{
tickets+=1;
System.out.println(Thread.currentThread().getName()+"：卖出去第："+tickets+"张票");
}else
{
flag =false;
}
}
try {
Thread.sleep(15);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return flag;
}
}