How do I convert collection into array?

To convert collection-based data into array we can use toArray() method provided by the implementation of Collection interface such as java.util.ArrayList.

import java.util.List; import java.util.ArrayList; public class CollectionToArrayExample { public static void main(String[] args) { List list = new ArrayList(); list.add("Java"); list.add("Sample"); list.add("Code"); Object[] array = list.toArray(); for (int i = 0; i < style="color: rgb(0, 102, 0);">length; i++) { System.out.println(array[i].toString()); } } }

Our sample code result is shown below:

Java
Sample
Code