Java 并发编程：线程间的协作(wait/notify/sleep/yield/join)

Java 并发编程：线程间的协作(wait/notify/sleep/yield/join)

线程的状态转换图

Java并发编程：Thread类的使用

对于notify/notifyAll方法的示例，会出现这种结果，很奇怪

也就是说notify()通知发出去了，没有线程开始执行。

public class JavaTest {
    public synchronized void testWait() {
        System.out.println(Thread.currentThread().getName() + " Start-----");
        try {
            wait();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println(Thread.currentThread().getName() + " End-------");
    }

    public static void main(String[] args) throws InterruptedException {
        final JavaTest test = new JavaTest();
        for (int i = 0; i < 5; i++) {
            new Thread(new Runnable() {
                @Override
                public void run() {
                    test.testWait();
                }
            }).start();
        }

        synchronized (test) {
            test.notify(); 
        }
        Thread.sleep(3000);
        System.out.println("-----------分割线-------------");

        synchronized (test) {
            test.notifyAll();
        }
    }
}