java.util.Arrays asList(T… a)


On this document we will be showing a java example on how to use the asList() method of Arrays Class. Basically the asList() method returns a fixed-size list backed by the specified array. This method is essential because it served as a bridge between array based and collection api. This works hand in hand with Collection.toArray() method.


  • The returned list is serializable and implements RandomAccess.

Method Syntax

public static <T> List<T> asList(T… a)

Method Argument

Data Type Parameter Description
T a T – the class of the objects in the array
a – the array by which the list will be backed

Method Returns

The asList() method returns a list view of the specified array.


Requires Java 1.2 and up

Java Arrays asList() Example

Below is a java code demonstrates the use of asList() method of Arrays class. The example presented might be simple however it shows the behavior of the asList() method.


import java.util.Arrays;
import java.util.List;

 * A java example source code to demonstrate
 * the use of asList() method of Arrays class

public class ArraysAsListExample {

	public static void main(String[] args) {

		// initialize a new String array
		String[] studentDatabase = new String[]{"Ryan","Alfred","Beth"};
		// convert the student database into list
		List alist = Arrays.asList(studentDatabase);
		// print how many student on the list
		System.out.println("Count of Student:"+alist.size());
		// print the contents of our list
		for(String s:alist){


The above java example source code demonstrates the use of asList() method of Arrays class.We simply declare a new String Array that correspond to student names.  Then we use the static method asList() of Arrays class. This method basically just converts our arrays of String into List. This gives a lot more versatility in our handling of our student database because there’s a lot of methods available in List class.

Sample Output

Below is the sample output when you run the above example.

Arrays asList() example output