package ex;

public class Deadlock implements Runnable {

  public static void main(String[] args) {
    Object a = "Resource A";
    Object b = "Resource B";
    Thread t1 = new Thread(new Deadlock(a, b));
    Thread t2 = new Thread(new Deadlock(a, b));
    t1.start();
    t2.start();

  }
  private Object firstResource;
  private Object secondResource;

  public Deadlock(Object first, Object second) {
    firstResource = first;
    secondResource = second;

  }

  @Override
  public void run() {
    while (true) {
      System.out.println(Thread.currentThread().getName() + " Looking for lock on " + firstResource);

    synchronized (firstResource) {
      System.out.println(Thread.currentThread().getName() + " Obtained lock on " + firstResource);
      System.out.println(Thread.currentThread().getName() + " Looking for lock on " + secondResource);
    }
    synchronized (secondResource) {
      System.out.println(Thread.currentThread().getName() + " Obtained lock on " + secondResource);
      try {
        Thread.sleep(100);
      } catch (InterruptedException e) {
      }
    }
    }
  }
}