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Java LinkedList sort() Method

❮ LinkedList Methods


Example

Sort a list in 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(null);
    System.out.println(cars);
  }
}

Try it Yourself »


Definition and Usage

The sort() method sorts items in the list. A Comparator can be used to compare pairs of elements. The comparator can be defined by a lambda expression which is compatible with the compare() method of Java's Comparator interface.

If null is passed into the method then 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 in order to be sorted without a comparator.


Syntax

public void sort(Comparator compare)

Parameter Values

Parameter Description
compare Required. A comparator or lambda expression which compares pairs of items in the list. Pass null to compare items naturally by their data type.

Technical Details

Java version: 1.8+

More Examples

Example

Use a lambda expression to sort a list in reverse 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);
  }
}

Try it Yourself »


Related Pages

Java Arrays Tutorial

Java LinkedList Tutorial


❮ LinkedList Methods
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