public class Test2 {public static void main(String[] args) {String lock = "lock";Thread thread1 = new Thread(new Runnable() {@Overridepublic void run() {synchronized (lock){System.out.println("线程1开始等待" + System.currentTimeMillis());try {lock.wait();} catch (InterruptedException e) {e.printStackTrace();}System.out.println("线程1结束等待" + System.currentTimeMillis());}}}){};Thread thread2 = new Thread(new Runnable() {@Overridepublic void run() {synchronized (lock){System.out.println("线程2开始等待唤醒" + System.currentTimeMillis());lock.notify();System.out.println("线程2开始唤醒" + System.currentTimeMillis());}}}){};thread1.start();try {Thread.sleep(3000);} catch (InterruptedException e) {e.printStackTrace();}thread2.start();}
}