How to Sort Vector using Collections.sort in java – Example

Vector maintains the insertion order which means it displays the elements in the same order, in which they got added to the Vector. In this example, we will see how to sort Vector elements in ascending order by using Collections.sort(). The Steps are as follows:
1) Create a Vector object
2) Add elements to the Vector using add(Element e) method
3) Sort it using Collections.sort(Vector object)
4) Display the sorted elements list.

import java.util.Collections;
import java.util.Vector;
public class SortingVectorExample {
 public static void main(String[] args) {

    // Create a Vector
    Vector<String> vector = new Vector<String>();
 
    //Add elements to Vector
    vector.add("Walter");
    vector.add("Anna");
    vector.add("Hank");
    vector.add("Flynn");
    vector.add("Tom");
 
    // By Default Vector maintains the insertion order
    System.out.println("Vector elements before sorting: ");
    for(int i=0; i < vector.size(); i++){
       //get(i) method fetches the element from index i
       System.out.println(vector.get(i));
    }

    // Collection.sort() sorts the collection in ascending order
    Collections.sort(vector);
 
    //Display Vector elements after sorting using Collection.sort
    System.out.println("Vector elements after sorting: :");
    for(int i=0; i < vector.size(); i++){
       System.out.println(vector.get(i));
    }
 } 
}

Output:

Vector elements before sorting: 
Walter
Anna
Hank
Flynn
Tom
Vector elements after sorting: :
Anna
Flynn
Hank
Tom
Walter