java面试题之交替打印t1t2，sync版

使用多线程交替打印t1t2：

package com.lizhenxin.java0422.b3;  import lombok.extern.java.Log; import lombok.extern.slf4j.Slf4j;  /**  * @author lizhenxin  * @create 2022-04-25-23:34  */ @Slf4j public class Wait1 {      static boolean isLock = false;      public static void main(String[] args) {         Thread t1 = new Thread(() -> {              while (true){                 synchronized (Wait1.class){                     while (!isLock){                         try {                             Wait1.class.wait();                         } catch (InterruptedException e) {                             e.printStackTrace();                         }                     }                     isLock = false;                     Wait1.class.notify();                     log.debug(t1);                 }             }           }, t1);            Thread t2 = new Thread(() -> {             while (true){                 synchronized (Wait1.class){                     while (isLock){                         try {                             Wait1.class.wait();                         } catch (InterruptedException e) {                             e.printStackTrace();                         }                     }                     isLock = true;                     Wait1.class.notify();                     log.debug(t2);                 }             }         }, t2);           t1.start();         t2.start();       } }