ArrayList<Employee>list=newArrayList<>();//add employees to listCollections.sort(list,Comparator.comparing(Employee::getName).thenComparing(Employee::getDob)); 2. Sorting an Array Usejava.util.Arrays.sort()method to sort a given array in a variety of ways. Thesort()is an overloaded method tha...
package com.journaldev.sort; import java.util.ArrayList; import java.util.Collections; import java.util.List; public class JavaListSort { /** * This class shows how to sort ArrayList in java * @param args */ public static void main(String[] args) { List<String> strList = new ArrayList...
Learn tosort anArrayListin JavausingArrayList.sort(),Collections.sort(),Comparatorinterface and Java 8 Streams. We can use the same methods for sorting in natural ordering as well as the reverse ordering of the elements stored in theArrayList. 1. Different Ways to Sort an ArrayList AnArrayListi...
UseComparator.naturalOrder()Method to Sort an ArrayList in Java TheComparatorinterface in Java can sort the objects of classes created by the user based on the desired data member. We can use it to sort lists also. ThenaturalOrder()function will sort the elements in ascending order. ...
Also, I have used thelambda expressionto implement our Comparators as oppose to theAnonymous classwhich we used earlier. You can see your Comparator implementation has become quite simple and you can write them in just one line. Java Program to sort an ArrayList using Comparator ...
With aComparator, we can define custom sorting rules for our lists. Let’s take a look at an example where we have a list ofPersonobjects that we want to sort by name: classPerson{Stringname;// constructor, getters and setters omitted for brevity}List<Person>people=Arrays.asList(newPerso...
Use Streamsorted()to Sort a List in Reverse Order in Java We can also provide the order in which the sorting takes place. To get the output or sorted stream in reversed order, specify it inside thesortedmethod by telling the comparator to use the reverse order. ...
Example 1: Sorting ArrayList in Ascending order In this example, we have anArrayListofStringtype. We are sorting the given ArrayList in ascending order usingCollections.sort()method. Since this ArrayList is of string type, the elements are sorted in ascending alphabetical order. ...
1.1 Sorting ArrayList in Ascending Order in Java First, let's see how to sort an array in ascending order in Java using theCollections.sort()method. This method is overloaded, which means you can sort the ArrayList in natural order by leveraging the default comparator, which sorts the list ...
To sort an ArrayList there are several ways such as using sort() method of List or sort() method of Collections class or sorted() method of stream API.