Sort Integer in Ascending Order in Java Example

In this example, we will take Integer wrapper class and sort it in ascending order by using Collections.sort() method.

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

public class SortWrappersExample {
 
    public static void main(String[] args) {
        sortWrapperClassObjectsInAsc();
    }
    private static void sortWrapperClassObjectsInAsc() {
        List<Integer> names = new ArrayList<>();
        names.add(100);
        names.add(20);
        names.add(10);
        names.add(50);

        System.out.println("Before Sorting : " + names);
        Collections.sort(names);
        System.out.println("After Sorting : " + names);
    }
}

Output

Before Sorting : [100, 20, 10, 50]
After Sorting : [10, 20, 50, 100]