Ilias Tsagklis

About Ilias Tsagklis

Ilias Tsagklis is a senior software engineer working in the telecom domain. He is an applications developer in a wide variety of applications/services. Ilias is co-founder and Executive Editor at Java Code Geeks.

Reverse order of List example

With this example we are going to demonstrate how to reverse the order of a List. This is provided by the reverse(List list) API method of the Collections class. The ArrayList is used as a List implementation, but the same API applies to any type of List implementation classes e.g. Vector etc. In short, to reverse the order of a List you should:

  • Create a new ArrayList.
  • Populate the list with elements, with the add(E e) API method of the ArrayList.
  • Reverse the elements of the list, invoking the reverse(List list) API method of the Collections.

Let’s take a look at the code snippet that follows:

package com.javacodegeeks.snippets.core;
import java.util.ArrayList;
import java.util.Collections;
public class ReverseListOrder {
  public static void main(String[] args) {


Please note that the same API applies to any type of 

List implementation classes e.g. Vector etc


    // Create an ArrayList and populate it with elements
    ArrayList arrayList = new ArrayList();

    System.out.println("ArrayList elements : " + arrayList);

    // static void reverse(List list) method reverses the order of elements of the specified list.
    System.out.println("ArrayList elements after reversing order : " + arrayList);


ArrayList elements : [element_1, element_2, element_3, element_4, element_5]
ArrayList elements after reversing order : [element_5, element_4, element_3, element_2, element_1]

This was an example of how to reverse the order of a List in Java.

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