我看不到以下代码如何产生看起来违反对象锁的定义的输出。当然,只有一个线程应该被允许打印“获得的锁定”消息,但它们都是?使用内部锁进行块输入
class InterruptThreadGroup {
public static void main(String[] args) {
Object lock = new Object();
MyThread mt1 = new MyThread(lock);
MyThread mt2 = new MyThread(lock);
mt1.setName("A");
mt1.start();
mt2.setName("B");
mt2.start();
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
}
// Thread.currentThread().getThreadGroup().interrupt();
}
}
class MyThread extends Thread {
private Object lock;
public MyThread(Object l) {
this.lock = l;
}
public void run() {
synchronized (lock) {
System.out.println(getName() + " acquired lock");
try {
lock.wait();
} catch (InterruptedException e) {
System.out.println(getName() + " interrupted.");
}
System.out.println(getName() + " terminating.");
}
}
}
不是一个好主意来扩展线程类。你应该实现可运行的接口。 – Arpit