Thread: how to test a class ??

hey i need help on testing a class it is confusing me on how to do it i was wondering how would i do it.

i need to create 3 objects in another classes constuctor n store them in an arraylist

yeah i get that but i have to do it in another classes constuctor in the test class. like below i have to create a vehicle object in the class below's constuctor n store it , but in the test class ?

import java.util.*;
import java.awt.*;
import java.io.*;
 
/** The Reservation System class stores all the data about the vehicles in the rental company. Also to allow the use to see what vehicles are allowed to be
 * rented by the company.
 * 
 */
 
public class ReservationSystem
{
    private String name;
    private ArrayList<Vehicle> vehicleList;
 
    /**
     * Constructor for the Reservation System class which.
     */
    public ReservationSystem( String name)
    {
     this.name = name;
      vehicleList = new ArrayList <Vehicle>();
    }
 
 
   /** This method allows users to be able to add a vehicle object which will then be stored in the arraylist.
    */
   public void storeVehicle(Vehicle newVehicle)
    {
        vehicleList.add(newVehicle); //Adds to arraylist.
 
    }

there is no problem i was just wondering how i would create a class that woould do it