In this article, we will see how to sort ArrayList elements in ascending order using a Collections.sort(List list) method.

Examples :
Input: 23, 54, 32, 56, 78, 65
Output: 23, 32, 54, 56, 65, 78

Input: Microsoft, Vmware, Salesforce, Apple, Facebook
Output: Apple, Facebook, Microsoft, Salesforce, Vmware

Example 1:

The below programs shows how to use sort(List list) to sort ArrayList elements in ascending order. Here the elements are of Integer type.

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

public class ArrayListSortExample {

        public static void main(String[] args) {
                ArrayList numbers = new ArrayList<>();
                numbers.add(23);
                numbers.add(54);
                numbers.add(32);
                numbers.add(56);
                numbers.add(78);
                numbers.add(65);

                System.out.println("ArrayList elements before sorting : " + numbers);
                Collections.sort(numbers);
                System.out.println("ArrayList elements after sorting in ascending order : " + numbers);
        }
}

Output:

ArrayList elements before sorting : [23, 54, 32, 56, 78, 65]
ArrayList elements after sorting in ascending order : [23, 32, 54, 56, 65, 78]

Example 2:

Let’s look at the program.

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

public class ArrayListDemo {

        public static void main(String[] args) {
                ArrayList companies = new ArrayList<>();
                companies.add("Microsoft");
                companies.add("Vmware");
                companies.add("Salesforce");
                companies.add("Apple");
                companies.add("Facebook");

                System.out.println("ArrayList elements before sorting: " + companies);
                Collections.sort(companies);
                System.out.println("ArrayList elements after sorting in ascending order: " + companies);
        }
}

Output:

ArrayList elements before sorting: [Microsoft, Vmware, Salesforce, Apple, Facebook] 
ArrayList elements after sorting in ascending order: [Apple, Facebook, Microsoft, Salesforce, Vmware]

That’s all for this article. Please share this if you like it.

Further Reading:

ArrayList Documentation.