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4 年
为什么 wait(), notify()和 notifyAll()必须在同步方法或者同步块中被调用?
Java中,任何对象都可以作为锁,并且 wait(),notify()等方法用于等待对象的锁或者唤醒线程,在 Java 的线程中并没有可供任何对象使用的锁,所以任意对象调用方法一定定义在Object类中。 wait(), notify()和 notifyAll()这些方法在同步代码块中调用 有的人会说,既然是 ...
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