notify

参考：https://blog.csdn.net/weixin_44121696/article/details/109306019


public class ObjectTest {public static void main(String[] args) {Object objectLock = new Object();new Thread(() -> {synchronized (objectLock) {System.out.println(Thread.currentThread().getName() + "--- hello t1");try {objectLock.wait();} catch (InterruptedException e) {e.printStackTrace();}System.out.println(Thread.currentThread().getName() + "--- t1 被唤醒");}}, "t1").start();new Thread(() -> {synchronized (objectLock) {System.out.println(Thread.currentThread().getName() + "--- hello t2");try {objectLock.wait();} catch (InterruptedException e) {e.printStackTrace();}System.out.println(Thread.currentThread().getName() + "--- t2 被唤醒");}}, "t2").start();new Thread(() -> {synchronized (objectLock) {System.out.println(Thread.currentThread().getName() + "--- hello t3");try {objectLock.wait();} catch (InterruptedException e) {e.printStackTrace();}System.out.println(Thread.currentThread().getName() + "---  t3 被唤醒");}}, "t3").start();new Thread(() -> {synchronized (objectLock) {System.out.println(Thread.currentThread().getName() + "--- hello t4");try {objectLock.wait();} catch (InterruptedException e) {e.printStackTrace();}System.out.println(Thread.currentThread().getName() + "--- t4 被唤醒");}}, "t4").start();new Thread(() -> {synchronized (objectLock) {objectLock.notify();System.out.println(Thread.currentThread().getName() + "--- 唤醒别人");}}, "t5").start();}
}

在这里插入图片描述

notifyAll()


public class ObjectTest {public static void main(String[] args) {Object objectLock = new Object();new Thread(() -> {synchronized (objectLock) {System.out.println(Thread.currentThread().getName() + "--- hello t1");try {objectLock.wait();} catch (InterruptedException e) {e.printStackTrace();}System.out.println(Thread.currentThread().getName() + "--- t1 被唤醒");}}, "t1").start();new Thread(() -> {synchronized (objectLock) {System.out.println(Thread.currentThread().getName() + "--- hello t2");try {objectLock.wait();} catch (InterruptedException e) {e.printStackTrace();}System.out.println(Thread.currentThread().getName() + "--- t2 被唤醒");}}, "t2").start();new Thread(() -> {synchronized (objectLock) {System.out.println(Thread.currentThread().getName() + "--- hello t3");try {objectLock.wait();} catch (InterruptedException e) {e.printStackTrace();}System.out.println(Thread.currentThread().getName() + "---  t3 被唤醒");}}, "t3").start();new Thread(() -> {synchronized (objectLock) {System.out.println(Thread.currentThread().getName() + "--- hello t4");try {objectLock.wait();} catch (InterruptedException e) {e.printStackTrace();}System.out.println(Thread.currentThread().getName() + "--- t4 被唤醒");}}, "t4").start();new Thread(() -> {synchronized (objectLock) {objectLock.notifyAll();System.out.println(Thread.currentThread().getName() + "--- 唤醒别人");}}, "t5").start();}
}