sort()

Example

Arrange a list alphabetically.

import java.util.LinkedList;

public class Main {

  public static void main(String[] args) {

    LinkedList<String> cars = new LinkedList<String>();

    cars.add("Volvo");

    cars.add("BMW");

    cars.add("Ford");

    cars.add("Mazda");

    cars.sort(null);

    System.out.println(cars);

  }

}

Definition and Usage

The sort() method organizes items in the list. A Comparator can be utilized to compare element pairs. This comparator can be established through a lambda expression compatible with Java’s Comparator interface’s compare() method.

If null is provided to the method, items will be sorted naturally based on their data type (e.g., alphabetically for strings, numerically for numbers). Non-primitive types must implement Java’s Comparable interface for sorting without a comparator.

Syntax

Parameter Values

Technical Details

More Examples

Example

Utilize a lambda expression to sort a list in descending alphabetical order.

import java.util.LinkedList;

public class Main {

  public static void main(String[] args) {

    LinkedList<String> cars = new LinkedList<String>();

    cars.add("Volvo");

    cars.add("BMW");

    cars.add("Ford");

    cars.add("Mazda");

    cars.sort( (a, b) -> { return -1 * a.compareTo(b); } );

    System.out.println(cars);

  }

}