Additional Notes
Why might an Iterator be preferred for safe removal during iteration?
Track: Java
Topic: Collections
Focus: Iteration and Traversal
Java: Iteration and Traversal
Answer
It allows safe removal of elements without causing ConcurrentModificationException.
Using an Iterator to remove elements during iteration prevents the ConcurrentModificationException that occurs with a simple enhanced for loop. The `Iterator.remove()` method is specifically designed for this purpose. For example, to safely remove all out-of-stock items from a list, you would use: `while(iterator.hasNext()) { if (item.isOutOfStock()) { iterator.remove(); } }`.
Using an Iterator to remove elements during iteration prevents the ConcurrentModificationException that occurs with a simple enhanced for loop. The `Iterator.remove()` method is specifically designed for this purpose. For example, to safely remove all out-of-stock items from a list, you would use: `while(iterator.hasNext()) { if (item.isOutOfStock()) { iterator.remove(); } }`.
Topics: Collections Iteration and Traversal Java