How do I use iterators in Java?

How do I use iterators in Java?

In Java, iterators are used to traverse collections like lists and sets. Would you like a code example?

Yes, please provide a code example.

Here's a simple example:

import java.util.ArrayList;
import java.util.Iterator;

public class Main {
    public static void main(String[] args) {
        ArrayList<String> list = new ArrayList<>();
        list.add("Apple");
        list.add("Banana");
        list.add("Cherry");

        Iterator<String> iterator = list.iterator();
        while (iterator.hasNext()) {
            System.out.println(iterator.next());
        }
    }
}

This code creates an ArrayList and uses an iterator to print each element.

What are the benefits of using iterators?

Iterators provide a uniform way to traverse collections, allow for safe removal of elements during iteration, and can work with different types of collections.

Are there any alternatives to iterators in Java?

Yes, you can use enhanced for-loops (for-each loops) or streams in Java 8 and above for more concise iteration.