Java .reverse()

The Collections.reverse() method reverses the current ordering of a List.

Syntax

import java.util.*;

Collections.reverse(myList);

This reverses the ordering of the elements in myList.

Example

The following example creates an ArrayList and then uses Collections.reverse() to reorder the elements:

import java.util.*;

public class Main {
 public static void main(String[] args) {
   ArrayList<String> food = new ArrayList<String>();
   food.add("Cabbage");
   food.add("Pizza");
   food.add("Sausage");
   food.add("Potatoes");
   food.add("Salad");

   System.out.println(food);
   Collections.reverse(food);
   System.out.println(food);
 }
}

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This will output the following:

[Cabbage, Pizza, Sausage, Potatoes, Salad]
[Salad, Potatoes, Sausage, Pizza, Cabbage]

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