The clear() method of CopyOnWriteArrayListin Java

To remove all the elements from the CopyOnWriteArrayList, use the clear() method. It empties the list.

The syntax is as follows:

void clear()

To work with CopyOnWriteArrayList class, you need to import the following package:

import java.util.concurrent.CopyOnWriteArrayList;

The following is an example to implement CopyOnWriteArrayList class clear() method in Java:

Example

 Live Demo

import java.util.concurrent.CopyOnWriteArrayList;
public class Demo {
   public static void main(String[] args) {
      CopyOnWriteArrayList<Integer> arrList = new CopyOnWriteArrayList<Integer>();
      arrList.add(220);
      arrList.add(250);
      arrList.add(400);
      arrList.add(500);
      arrList.add(650);
      arrList.add(700);
      arrList.add(800);
      System.out.println("CopyOnWriteArrayList String Representation = " + arrList.toString());
      arrList.clear();
      System.out.println("Updated CopyOnWriteArrayList = " + arrList.toString());
   }
}

Output

CopyOnWriteArrayList String Representation = [220, 250, 400, 500, 650, 700, 800]
Updated CopyOnWriteArrayList = []