Java Thread Synchronization Scope

Question

If multiple threads call updateData() simultaneously, what issue is most likely to occur with respect to the array 'data'?
 
```java
public class BatchUpdater {
    private int[] data = new int[100];
    
    public void updateData() {
        for (int i = 0; i < data.length; i++) {
            synchronized(this) {
                data[i] += 1;
            }
        }
    }
}
```

Accepted Answer

Other threads might observe a partially updated array state since synchronization is applied per iteration rather than for the whole loop.

Answer

A race condition is completely prevented due to the synchronized block in every iteration.

Answer

Deadlock will occur because each iteration synchronizes on the same object repeatedly.

Answer

The program will throw an exception due to concurrent modifications of an array.

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