How do Java collection iterators perform in terms of efficiency?

How do Java collection iterators perform in terms of efficiency?

Java collection iterators are designed for efficient traversal of collections. Their performance can vary based on the type of collection used.

What types of collections are there in Java?

Java has several collection types, including List, Set, and Map. Each has its own iterator implementation.

Which iterator is the fastest for large datasets?

For large datasets, the ArrayList iterator is generally faster due to its contiguous memory allocation, compared to LinkedList.

Are there any performance trade-offs I should be aware of?

Yes, while ArrayList is fast for iteration, it can be slower for insertions and deletions compared to LinkedList.