在main方法中，有4個(gè)LockSupport.unpark方法，當(dāng)t1線程運(yùn)行時(shí)應(yīng)該Lock.park()不應(yīng)該堵塞代碼，但是實(shí)際是堵塞的為什么,為什么main方法中注釋中的方法就可以輸出11111，park方法沒有阻塞當(dāng)前進(jìn)程。

public class LockSupportDemo {
    public static Object u = new Object();
    static ChangeObjectThread t1 = new ChangeObjectThread("t1");
    

    public static class ChangeObjectThread extends Thread{

        public ChangeObjectThread(String name)
        {
            super.setName(name);
        }

        @Override
        public void run() {
            synchronized (u)
            {

                LockSupport.park(Thread.currentThread());
                System.out.println("in "+ getName());
                if(Thread.interrupted())
                {
                    System.out.println(getName()+" interrupted");
                }
            }
            System.out.println(getName() +"isOver");

        }
    }

    public static void main(String[] args) throws InterruptedException {
        LockSupport.unpark(t1);
        LockSupport.unpark(t1);
        LockSupport.unpark(t1);
        LockSupport.unpark(t1);
        LockSupport.unpark(t1);
        t1.start();
        /**
        *LockSupport.unpark(Thread.cuurentThread);
        *LockSupport.unpark(Thread.cuurentThread);
        *Lock.park();
        *System.out.println("11111");
        *
        */
    }
}