Java – Convert Vector to ArrayList example

In this article, we will write a Java program to convert Vector to ArrayList. In Java, both Vector and ArrayList implement the List interface and use dynamic arrays internally to store elements. However their performance for various operations such as search, insert, delete etc. differ in performance in different scenarios.

Note: You may also want to read: Vector to Array Conversion

Java Program to convert Vector to ArrayList

In this example, we have a Vector that contains String elements, we are converting it into an ArrayList by calling the constructor of ArrayList class while passing Vector as parameter.

import java.util.Vector;
import java.util.ArrayList;
public class VectorToArrayList {
 
  public static void main(String[] args) {
 
     // Creating a Vector of String type
     Vector<String> vector = new Vector<String>();
 
     // Adding elements to the vector
     vector.add("Rahul");
     vector.add("Steve");
     vector.add("Jude");
     vector.add("Locke");
     vector.add("Mike");
     vector.add("Robert");
 
     //Displaying Vector elements
     for (String str : vector){
        System.out.println(str);
     }
 
     // Creating an ArrayList while passing Vector instance as a
     // parameter to the constructor of ArrayList class
     ArrayList<String> arraylist = new ArrayList<String>(vector);
 
     // Displaying ArrayList Elements after conversion
     System.out.println("\nArrayList Elements :");
     for (String s : arraylist){
        System.out.println(s);
     }
  }
}

Output:

Rahul
Steve
Jude
Locke
Mike
Robert

ArrayList Elements :
Rahul
Steve
Jude
Locke
Mike
Robert

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• Java – Convert Vector to List
• Vector vs ArrayList in Java