package bytedance;

import java.util.concurrent.locks.ReentrantLock;

/**
 * @Description
 * @Author msli
 * @Date 2022年01月13日
 */

public class PrintThread {

 public static int count = 0;
 public static int threadSize = 3;

 private static ReentrantLock lock = new ReentrantLock();

 public static void main(String[] args) throws InterruptedException {

 Thread[] threads= new Thread[threadSize];
 for (int i = 0; i < threads.length; i++) {
 final int ii = i;
 threads[i] = new Thread( () -> {
 try {
 lock.lock();
 if (count % threadSize == ii) {
 System.out.println(String.format("第 %d 个线程[%s]开始打印:count = %d", ii, Thread.currentThread().getName(), count));
 count++;
 }
 } catch (Exception e) {
 e.printStackTrace();
 } finally {
 lock.unlock();
 }
 });
 }
 for (int i = 0; i < threads.length; i++) {
 threads[i].start();
 threads[i].join();
 }

 }
}