- Java code
import java.util.concurrent.locks.*;public class ReentrantLock implements Runnable{ private int num = 0; private Lock lock = new ReentrantLock();//创建重入锁对象。这里怎么报错啊？？？ @Override public void run(){ lock.lock(); //打开锁 try{ for(int i = 0; i < 5; i++){ try{ Thread.sleep(100); }catch (InterruptedException e){ e.printStackTrace(); } System.out.println(Thread.currentThread().getName() + ":" + num++); } }finally{ lock.unlock();//释放锁 } } public static void main(String[] args) { ReentrantLock run = new ReentrantLock(); Thread thread1 = new Thread(run); Thread thread2 = new Thread(run); thread1.start(); thread2.start(); }}private Lock lock = new ReentrantLock(); 这句 new ReentrantLock() 为什么不能通过编译？？
------解决方案--------------------
ReentrantLock 都被你覆盖了，还能是lock吗？
改下名字
public class ReentrantLockRunnable implements Runnable{
private int num = 0;
private Lock lock = new ReentrantLock();//创建重入锁对象。这里怎么报错啊？？？
即使成功了，也会栈溢出。