Waiter waiter=newWaiter(msg);newThread(waiter,"waiter").start(); Waiter waiter1=newWaiter(msg);newThread(waiter1, "waiter1").start(); Notifier notifier=newNotifier(msg);newThread(notifier, "notifier").start(); System.out.println("All the threads are started"); } } 输出: waiter waiting...
---public void start(); 启动该线程,其中调用了这个方法不一定就立即进行,还要看是否被调度到; ---public static Thread currentThread(); 静态方法,这个方法很重要,用来返回当前正在执行的线程对象引用; ---public final booleann isAlive();测试线程是否还活着; ---public Thread.State getState();返回该线...
F区别 sleep()方法 sleep()使当前线程进入停滞状态(阻塞当前线程),让出CUP的使用、目的是不让当前线程独自霸占该进程所获的CPU资源,以留一定时间给其他线程执行的机会; sleep()是Thread类的Static(静态)的方法;因此他不能改变对象的机锁,所以当在一个Synchronized块中调用Sleep()方法是,线程虽然休眠了,但是对象的...
BasicObjectLock*elem))#ifdefASSERTthread->last_frame().interpreter_frame_verify_monitor(elem);#endifif(PrintBiasedLockingStatistics){Atomic::inc(BiasedLocking::slow_path_entry_count_addr());}Handleh_obj(thread,elem->obj());assert(Universe::heap()->is_in_reserved_or_null(h_obj()),"must b...
java && java WaitNotify02Exception in thread "main" java.lang.IllegalMonitorStateException: current thread is not ownerat java.base/java.lang.Object.wait(Native Method)at java.base/java.lang.Object.wait(Object.java:338)at WaitNotify02.main(WaitNotify02.java:4) 加上同步块, 调整代码运行查看...
Exception in thread "main" java.lang.IllegalMonitorStateException 1. 1.3 在非同步块中调用 以下代码会导致异常: class IncorrectUsage { public void waitWithoutLock() { try { wait(); // 没有同步块 } catch (InterruptedException e) { Thread.currentThread().interrupt(); ...
一个关于Java Thread wait(),notify()的实用例 /// // ProducerConsumer.java // // @author 叶雨 // // 这是个很重要的Thread例子。需要注意的是: // wait() 必须在synchronized 函数或者代码块里面 // wait()会让已经获得synchronized 函数或者代码块控制权的Thread暂时休息,并且丧失控制权 /...
package java.lang; /** * Waits for this thread to die. * * An invocation of this method behaves in exactly the same * way as the invocation * * <blockquote> * {@linkplain #join(long) join}{@code (0)} * </blockquote> * * @throws InterruptedException * if any thread has in...
Exception in thread "main" java.lang.IllegalMonitorStateException 在JVM源代码中首先会检查当前线程是否持有锁,如果没有持有则抛出异常 其次为什么要加,也有比较广泛的讨论,首先wait/notify是为了线程间通信的,为了这个通信过程不被打断,需要保证wait/notify这个整体代码块的原子性,所以需要通过synchronized来加锁。
in ObjectMonitor::wait(long, bool, Thread*) () from /path/to/jdk-11.0.8+10/lib/server/libjvm.so #3 0x00007fee4ee55757 in ObjectSynchronizer::waitUninterruptibly(Handle, long, Thread*) () from /path/to/jdk-11.0.8+10/lib/server/libjvm.so #4 0x00007fee4e92f7f5 in InstanceKlass...