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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:
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Collections.reverse(myArrayList);
In this example we use Collections.reverse() to reverse the numbers ArrayList.
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import java.util.*;2
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public class Example {4
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public static void main(String[] args) {6
List<Integer> numbers = new ArrayList<>();7
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// add items to the ArrayList9
numbers.add(1);10
numbers.add(2);11
numbers.add(3);12
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// reverse ArrayList14
Collections.reverse(numbers);15
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System.out.println(numbers);17
}18
}Output:
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[3, 2, 1]