Two ReentrantLock : ReentrantLock « JDK 7 « Java

1. Java
2. JDK 7
3. ReentrantLock

Two ReentrantLock

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

public class Test {
  public static void main(String[] args) {
    final Lock firstLock = new ReentrantLock();
    final Lock secondLock = new ReentrantLock();
    firstLock.lock();
    Thread secondThread = new Thread(new Runnable() {
      public void run() {
        secondLock.lock();
        firstLock.lock();
      }
    });
    secondThread.start();
    try {
      Thread.sleep(250);
    } catch (InterruptedException e) {
      e.printStackTrace();
    }
    secondLock.lock();

    secondLock.unlock();
    firstLock.unlock();
  }
}

 

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