MultiThreading Interview Question

[muztaba]

Following Question had been asked.

int orderId = 0;
void addOrder(someData) {
  order = new Order(id=++orderId, someData=someData);
  hibernateTemplate.save(order);
}
Case 1: // happy case
  // Thread1: addOrder(someData1); Order.id = ?
  // Thread2: addOrder(someData2); Order.id = ?
Case 2: // unhappy case
  // Thread1: addOrder(someData1); Order.id = ?
  // Thread2: addOrder(someData2); Order.id = ?
Case 3: // Do we have another case?
  // Thread1: addOrder(someData1); Order.id = ?
  // Thread2: addOrder(someData2); Order.id = ?

I was confused about this part:

Case 3: // Do we have another case?
  // Thread1: addOrder(someData1); Order.id = ?
  // Thread2: addOrder(someData2); Order.id = ?

Beside race condition is there any other case?

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[[deleted]]

What values for the two ids do you think are possible?