Java quiz 24: The ArrayList of car brands

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Here is an ArrayList of car brands. This program shows what happens if you add a new brand in a specific index.

Java quiz 24: The ArrayList of car brands

Level: Normal

What happens if the following code is compiled and run?

import java.util.ArrayList;
import java.util.Iterator;

public class CarBrands
{
  public static void main(String[] args)
  {
    ArrayList<String> carList = new ArrayList<String>();
    carList.add("Audi");
    carList.add("Opel");
    carList.add("Volvo");
    carList.add("Toyota");
    carList.add(3, "Ford");
    Iterator<String> iter = carList.iterator();
    while(iter.hasNext())
    {
      System.out.print(" " + iter.next());
    }
  }
}
Author: Sar Maroof

Select the correct answer.


Answer explanation

  1. The statement carList.add(3, “Ford”); adds the brand Ford at the third index to the list.
  2. Remember that the index of the ArrayList starts from 0. Therefore the brand Ford will be added after Volvo.

The correct answer is: f.

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Sar Maroof is graduated from HBO Amsterdam "higher professional education". He is a professional computer programming teacher, gives master classes and publishes technical articles. His experience with developing software started from 2001 and he has worked as a software developer for several big as well as small companies and later as a freelancer. He is the author of Java quizmaster and Build a Java application in 7 days.

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