How to clear an ArrayList in Java

In this tutorial, we are going to learn about how to clear or empty an ArrayList in Java.

Clearing an arraylist means removing the all elements from a given list.

Using clear() method

To clear an ArrayList, we can use the built-in clear() method of ArrayList class in Java.

Here is an example, that removes all elements from a users list:

import java.util.ArrayList;
import java.util.Arrays;

public class Main
{
    public static void main(String[] args) {

        ArrayList<String> users = new ArrayList<>(Arrays.asList("john", "kevin", "rose"));
        users.clear();   //clears the list

        System.out.println(users);
   }
}

Ouput:

[]