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Java - reverse ArrayList
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In this article, we would like to show you how to reverse the ArrayList in Java.
Quick solution:
Collections.reverse(myArrayList);
Practical example
In this example we use Collections.reverse() to reverse the numbers ArrayList.
import java.util.*;
public class Example {
public static void main(String[] args) {
List<Integer> numbers = new ArrayList<>();
// add items to the ArrayList
numbers.add(1);
numbers.add(2);
numbers.add(3);
// reverse ArrayList
Collections.reverse(numbers);
System.out.println(numbers);
}
}
Output:
[3, 2, 1]