Java Arrays asList() method example

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

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

Requires Java 1.2 and up

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.

package com.javatutorialhq.java.examples;

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){
			System.out.println(s);
		}

	}
}

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.

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

• Java Arrays Class Tutorial
• Java Tutorial

• Oracle Java Documentation