notify method wakes up only one thread waiting on the object and that thread starts execution. So if there are multiple threads waiting for an object, this method will wake up only one of them. The choice of the thread to wake depends on the OS implementation of thread management. notify方...
Thread.currentThread().interrupt(); } } System.out.print(number); printLetter = true; lock.notifyAll(); // 唤醒其他等待中的线程 } } }); letterThread.start(); numberThread.start(); try { letterThread.join(); numberThread.join(); } catch (InterruptedException e) { Thread.currentThread(...
notify() 但是别激动,程序并未结束,因为上面的代码中有两个waiter线程都在等待同一个Message对象,但只有一次notify()方法调用,所以只有一个线程被唤醒,而另一个线程只能继续等待。 notifyAll() 如果把Notifier中的notify()注释掉,并把notifyAll()的注释打开,再次调用上面的测试程序,将会有不同的输出: waiter wait...
messages.addElement(new java.util.Date().toString());System.out.println("put message");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() t...
下面通过一段demo来解释Wait和Notify的功能 import java.util.concurrent.TimeUnit; public class WaitNotify { public static void main(String[] args) { final Object A = new Object(); final Object B = new Object(); Thread t1 = new Thread("t1-thread") { ...
waiter waiter thread got notified at time:1356318918120 waiter processed: notifier Notifier work done Since notifyAll() method wake up both the Waiter threads and program completes and terminates after execution. That’s all for wait, notify and notifyAll in java....
public class WaitNotify02 { public static void main(String[] args) throws InterruptedException{ WaitNotify02 waitNotify02 = new WaitNotify02(); waitNotify02.wait(); }} 运行效果: javac -encoding UTF-8 WaitNotify02.java && java WaitNotify02Exception in thread "main" java.lang.IllegalMonitorSt...
Thread[NotifyThread,5,main] hold lock, notify waitThread and flag is true：流水线B准备好了配件...
java.lang.Object类中提供了两个用于线程通信的方法: (1)wait():执行该方法的线程释放对象的锁,Java虚拟机把该线程放到该对象的等待池中。该线程等待其他线程将它唤醒。 (2)notify():执行该方法的线程唤醒在对象的等待池中等待的一个线程。Java虚拟机从对象的等待池中随机地选择一个线程,把它转到对象的锁池中...
二、Thread和Object类中线程相关方法 (一)、抛出问题: 1.为什么线程通信的方法wait(),notify()和notifyall()被定义在Object类里?而sleep被定义中Thread类中? 2.用3种方式实现生产者模式 3.javaSE8和java1.8和JDK8是什么关系,是一个东西吗? 4.Join和sleep和wait期间线程状态分别是什么?为什么呢?