class Run implements Runnable{
@Override
public void run() {
try {
System.out.println(Thread.currentThread().getName() + " begin...");
Thread.sleep(1000*20);
System.out.println(Thread.currentThread().getName() + " over...");
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
public class TestThread {
public static void main(String[] args) {
Run run = new Run();
new Thread(run).start();
new Thread(run).start();
}
}
请问这段代码中 Thread.sleep(1000*20); //线程握住的锁是谁? 是run这个对象?还是谁?
