publicclassWaiterimplementsRunnable{privateMessage msg;publicWaiter(Message m){this.msg=m;}@Overridepublicvoidrun(){String name=Thread.currentThread().getName();synchronized(msg){try{System.out.println(name+" waiting to get notified at time:"+System.currentTimeMillis());msg.wait();}catch(Interrup...
1.wait和notify,notifyAll: wait和notify,notifyAll是Object类方法,因为等待和唤醒必须是同一个锁,不可以对不同锁中的线程进行唤醒,而锁可以是任意对象,所以可以被任意对象调用的方法,定义在Object基类中。 wait()方法:对此对象调用wait方法导致本线程放弃对象锁,让线程处于冻结状态,进入等待线程的线程池当中。wait是...
System.out.println(name+" waiter thread got notified at time:"+System.currentTimeMillis());//process the message nowSystem.out.println(name+" processed: "+msg.getMsg()); } } } WaitNotifyTest:测试 publicclassWaitNotifyTest {publicstaticvoidmain(String[] args) { Message msg=newMessage("pro...
notify();//Later, when the necessary event happens, the thread that is running it calls notify() from a block synchronized on the same object.// Called by Consumer publicsynchronizedString getMessage() throws InterruptedException { while(messages.size() == 0) { wait();//By executing wait(...
Java 的多线程编程提供了强大的工具,例如wait()和notify()方法,用于线程间的协调。然而,这些方法必须在同步块中调用,否则会抛出IllegalMonitorStateException异常。此外,ThreadLocal提供了一种简单的方式为每个线程存储独立的数据,但若使用不当,可能导致内存泄漏问题。
一.wait()、notify()和notifyAll() wait()、notify()和notifyAll()是Object类中的方法: * Wakes up a single thread that is waiting on this object's * monitor. If any threads are waiting on this object, one of them * is chosen to be awakened. The choice is arbitrary and occurs at ...
2. notify()和wait()-示例1 public class ThreadA { public static void main(String[] args){ ThreadB b = new ThreadB(); b.start(); synchronized(b){ try{ System.out.println("Waiting for b to complete..."); b.wait(); }catch(InterruptedException e){ e.printStackTrace(); } System....
Thread[NotifyThread,5,main] hold lock, notify waitThread and flag is true Thread[WaitThread,5,...
一.wait()、notify()和notifyAll() Object类中的方法: /** * Wakes up a single thread that is waiting on this object's * monitor. If any threads are waiting on this object, one of them * is chosen to be awakened. The choice is arbitrary and occurs at ...
没有设置 Timeout 参数的 Object.wait() 方法。 没有设置 Timeout 参数的 Thread.join() 方法。 LockSupport.park() 方法。 Blocked 仅仅针对 synchronized monitor 锁,可是在 Java 中还有很多其他的锁,比如 ReentrantLock,如果线程在获取这种锁时没有抢到该锁就会进入 Waiting 状态,因为本质上它执行了 LockSupport...