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Collections in Java

CopyOnWriteArrayList: Iteration

Let's discuss how we can iterate over a CopyOnWriteArrayList.

We'll cover the following...

Iteration using forEach()

We can use the forEach(Consumer<? super E> action) method to iterate over a CopyOnWriteArrayList. This method was added in Java 8 and takes a lambda expression of type Consumer as the parameter.

Java
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
public class CopyOnWriteArrayListDemo {
	public static void main(String args[]) {
		List<String> list = new CopyOnWriteArrayList<>();
		list.add("Apple");
		list.add("Banana");
		list.add("Orange");
		list.forEach(System.out::println);
	}
}

Iteration using iterator()

The iterator() method returns an iterator that provides a snapshot of the state of the list when the iterator was constructed. No synchronization is ...