Remove all elements from Java ArrayList Example

This Java Example shows how to remove all elements from java ArrayList object using clear method.

import java.util.ArrayList;

public class RemoveAllElementsOfArrayListExample {

 public static void main(String[] args) {

  // create an ArrayList object
  ArrayList arrayList = new ArrayList();

  // Add elements to Arraylist

  arrayList.add("1");
  arrayList.add("2");
  arrayList.add("3");

  System.out.println("Size of ArrayList before removing elements : "
    + arrayList.size());
  /*
   * To remove all elements from the ArrayList use void clear() method.
   */
  arrayList.clear();
  System.out.println("Size of ArrayList after removing elements : "
    + arrayList.size());
 }
}

The output is:



Size of ArrayList before removing elements : 3
Size of ArrayList after removing elements : 0