ArrayList.sort(Comparator) in Java

ArrayList.sort(Comparator<? super E>): This method is available in java.util.ArrayList class of Java.

Syntax:

void java.util.ArrayList.sort(Comparator<? super Integer> c)

This method sorts this list according to the order induced by the specified Comparator. 

Note: The sort is stable: this method must not reorder equal elements.

Parameters: One parameter is required for this method.

c: the Comparator used to compare list elements. A null value indicates that the elements' natural ordering should be used.

Exceptions: NA

Approach 

Java

import java.util.ArrayList;
import java.util.Collections;

public class ArrayListsort {
    public static void main(String[] args) {
        ArrayList<Integer> arr = new ArrayList<>();
        arr.add(10);
        arr.add(234);
        arr.add(32);
        arr.add(3);
        System.out.println("Array Before sort: ");
        arr.forEach((n -> System.out.print(n + " ")));
        System.out.println();
        Collections.sort(arr);

        System.out.println("Array After sort: ");
        arr.forEach((n -> System.out.print(n + " ")));

    }
}

Output:

Array Before sort: 

10 234 32 3 

Array After sort: 

3 10 32 234