自己继承AQS实现自定义锁，交替输入输出0和1

gistfile1.txt

package org.example;

import java.util.concurrent.locks.AbstractQueuedSynchronizer;
import java.util.concurrent.locks.ReentrantLock;

/**
 * @author claws
 * @since 2023/4/7
 */
public class Main {
    public static void main(String[] args) {
        System.out.println("Hello world!");
        OneByOneLock oneByOneLock = new OneByOneLock(0);

        Runnable task1 = new Runnable() {
            @Override
            public void run() {
                for (int i = 0; i < 10; ++i) {
                    oneByOneLock.acquire(1);
                    System.out.println(1);
                    oneByOneLock.release(0);
                }
            }
        };

        Runnable task2 = new Runnable() {

            @Override
            public void run() {
                for (int i = 0; i < 10; i++) {
                    oneByOneLock.acquire(0);
                    System.out.println(0);
                    oneByOneLock.release(1);
                }
            }
        };

        new Thread(task1).start();
        new Thread(task2).start();

    }
}

class OneByOneLock extends AbstractQueuedSynchronizer {
    public OneByOneLock(int initNum) {
        setState(initNum);
    }

    @Override
    protected boolean tryAcquire(int outputNum) {
        if (getState() == outputNum) {
            setExclusiveOwnerThread(Thread.currentThread());
            return true;
        }
        return false;
    }

    @Override
    protected boolean tryRelease(int nextNum) {
        setState(nextNum);
        setExclusiveOwnerThread(null);
        return true;
    }

    @Override
    protected boolean isHeldExclusively() {
        return getExclusiveOwnerThread() == Thread.currentThread();
    }
}