Remove all element in ArrayList Java

Remove all elements from the ArrayList in Java

To remove all elements from ArrayList in Java, let us first create an ArrayList with some elements

ArrayList arrlist = new ArrayList[5]; arrlist.add[25]; arrlist.add[50]; arrlist.add[75]; arrlist.add[100]; arrlist.add[150]; arrlist.add[200]; arrlist.add[250];

Now, let us remove all the elements

arrlist.clear[];

Example

Let us now see the complete code

Live Demo

import java.util.ArrayList; public class Demo { public static void main[String[] args] { ArrayList arrlist = new ArrayList[5]; arrlist.add[25]; arrlist.add[50]; arrlist.add[75]; arrlist.add[100]; arrlist.add[150]; arrlist.add[200]; arrlist.add[250]; for [Integer number : arrlist] { System.out.println["Number = " + number]; } int retval = arrlist.size[]; System.out.println["List consists of "+ retval +" elements"]; System.out.println["Performing clear operation!!"]; arrlist.clear[]; retval = arrlist.size[]; System.out.println["Now, list consists of "+ retval +" elements"]; } }

Output

This will produce the following output

Number = 25 Number = 50 Number = 75 Number = 100 Number = 150 Number = 200 Number = 250 List consists of 7 elements Performing clear operation!! Now, list consists of 0 elements