线程中找不到符号的错误提示 - 黑马程序员技术交流社区

class Ticket implements Runnable
{
private static int tick = 100;
boolean flag = true;
public void run(){
if(flag)
{
while(true)
{
synchronized(this)
{
if(tick>0)
{
try{Thread.sleep(10);}catch(InterruptedException e){e.printStackTrace();}
System.out.println("======code=====" + Thread.currentThread().getName() + tick--);
}
}
}
}
else
{
while(true)
{
show();
}
}
}
private synchronized void show()
{
if(tick>0)
{
try{Thread.sleep(10);}catch(InterruptedException e){e.printStackTrace();}
System.out.println("======show=====" + Thread.currentThread().getName() + tick--);
}
}
}
public class StaticMethodDemoMe
{
public static void main(String args[])
{
Runnable run = new Ticket();
Thread t1 = new Thread(run);
Thread t2 = new Thread(run);
t1.start();
try{Thread.sleep(10);}catch(Exception e){}
run.flag = false;//找不到符号
t2.start();
}
}

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