Aug 20, 2022by @kodeazy

Java How to sort a list in descending order using streams?

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In this blog we will be discussing on how to sort a list using streams in descending order.
To sort the list using streams we sort the list using compareTo function and we collect it as a list using collect function.

Below is the example syntax to sort the ArrayList.

arrayIntegers.stream().sorted((s1,s2)->s2.compareTo(s1)).collect(Collectors.toList());

Below is an example code how to sort the ArrayList objects using streams in descending order.

import java.util.*;
import java.util.stream.Collectors;
class ArrayListReplaceIndex{
public static void main(String args[]){
	List<Integer> arrayIntegers = Arrays.asList(10,30,24,60,55);
	arrayIntegers=arrayIntegers.stream().sorted((s1,s2)->s2.compareTo(s1)).collect(Collectors.toList());
	System.out.println("Elements before replacing"+arrayIntegers);
	System.out.print("Elements after replacing element at second index "+arrayIntegers);
}
}

Output:

D:\java>javac ArrayListReplaceIndex.java
D:\java>java ArrayListReplaceIndex
Elements before replacing[60, 55, 30, 24, 10]
Elements after replacing element at second index [60, 55, 30, 24, 10]