LockSupport和AbstractQueuedSynchronizer的任何实际例子都使用？

import java.util.concurrent.locks.LockSupport;

public class ThreadPauseResumeExample {
    public static void main(String[] args) {
        Thread thread = new Thread(() -> {
            System.out.println("Thread started");
            
            // 暂停线程
            LockSupport.park();
            
            System.out.println("Thread resumed");
        });
        
        thread.start();
        
        // 主线程休眠1秒钟
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        
        // 恢复线程
        LockSupport.unpark(thread);
    }
}

import java.util.concurrent.locks.AbstractQueuedSynchronizer;

public class SimpleExclusiveLock {
    private static class Sync extends AbstractQueuedSynchronizer {
        @Override
        protected boolean tryAcquire(int arg) {
            if (compareAndSetState(0, 1)) {
                setExclusiveOwnerThread(Thread.currentThread());
                return true;
            }
            return false;
        }
        
        @Override
        protected boolean tryRelease(int arg) {
            if (getState() == 0) {
                throw new IllegalMonitorStateException();
            }
            setExclusiveOwnerThread(null);
            setState(0);
            return true;
        }
        
        @Override
        protected boolean isHeldExclusively() {
            return getState() == 1;
        }
    }
    
    private final Sync sync = new Sync();
    
    public void lock() {
        sync.acquire(1);
    }
    
    public void unlock() {
        sync.release(1);
    }
    
    public boolean isLocked() {
        return sync.isHeldExclusively();
    }
}