Question

Exercise3

Given the following classes:

The Holiday class has:

• Properties of destination (String), duration (int days) and cost (int $).

• All expected getters and setters.
• A default constructor
• A fully parameterised constructor (which takes all properties)
• A toString method which returns a String showing all the properties.

The TravelAgent class has:

• Properties of name (String), postcode (String) and holidays (an ArrayList of Holidays) – complete with getters and setters.
• A parameterised constructor (name and postcode only) which also initialises the holidays ArrayList.
• A method (addHoliday) which adds a holiday to the Travel Agents list.
• A toString method which returns a String showing all the properties including details of the Holidays.

(RunTravelAgent.java

public class RunTravelAgent 
{
    public static void main(String[] args)
    {
        Holiday h1 = new Holiday("Bermuda", 2, 800);
        Holiday h2 = new Holiday("Hull", 14, 8);
        Holiday h3 = new Holiday("Los Angeles", 12, 2100);

        TravelAgent t1 = new TravelAgent("CheapAsChips", "MA99 1CU");
        t1.addHoliday(h1);
        t1.addHoliday(h2);
        t1.addHoliday(h3);
        
        TravelAgent t2 = new TravelAgent("Shoe String Tours", "CO33 2DX");
        
        System.out.println(t1);
        
        System.out.printf("h3 Duration=%s days & Cost=$%s\n", h3.getDuration(), h3.getCost());
        System.out.printf("t2 %s %s\n", t2.getName(), t2.getPostcode());
    }
}       

)

Implement these two classes. You are supplied with a test file called RunTravelAgent.java which should produce this output:

CheapAsChips at MA99 1CU

Holiday{destination=Bermuda, duration=2 days, cost=$800}

Holiday{destination=Hull, duration=14 days, cost=$8}

Holiday{destination=Los Angeles, duration=12 days, cost=$2100}

h3 Duration=$12 & Cost =$2100

t2 Shoe String Tours CO33 2DX

Answer 1

Hi,

Please find below code as per your requirement.

I didn't modify RunTravelAgent.java class so not posting again.

Let me know if you have any concern/doubt in this answer via comments.

Hope this answer helps you.

Thanks.

/*************************JAVA CODE**************************/

/**************Holiday.java***************/

public class Holiday {

   //instance variables
   private String destination;
   private int duration;
   private int cost;
  
   /**
   * This is default constructor which construct Holiday object with default values.
   */
   public Holiday() {
      
   }
  
   /**
   * Parameterized constructor which takes 3 parameter to construct Holiday object
   * @param destination
   * @param duration
   * @param cost
   */
   public Holiday(String destination, int duration, int cost) {
       this.destination = destination;
       this.duration = duration;
       this.cost = cost;
   }

   /**
   * @return the destination
   */
   public String getDestination() {
       return destination;
   }

   /**
   * @param destination the destination to set
   */
   public void setDestination(String destination) {
       this.destination = destination;
   }

   /**
   * @return the duration
   */
   public int getDuration() {
       return duration;
   }

   /**
   * @param duration the duration to set
   */
   public void setDuration(int duration) {
       this.duration = duration;
   }

   /**
   * @return the cost
   */
   public int getCost() {
       return cost;
   }

   /**
   * @param cost the cost to set
   */
   public void setCost(int cost) {
       this.cost = cost;
   }

   /**
   * This method returns String representation of Holiday object
   */
   @Override
   public String toString() {
       return "Holiday {destination=" + destination + ", duration=" + duration + " days, cost=$" + cost + "}";
   }
  
  
}

/*************TravelAgent.java***************/

import java.util.ArrayList;

public class TravelAgent {

   //instance variables
   private String name;
   private String postcode;
   private ArrayList<Holiday> holidays;
  
   /**
   * Parameterized constructor which takes 2 parameter to construct Travel Agent object
   * @param name
   * @param postcode
   */
   public TravelAgent(String name, String postcode) {
       this.name = name;
       this.postcode = postcode;
       //initializing arraylist of holiday
       this.holidays = new ArrayList<Holiday>();
   }

   /**
   * @return the name
   */
   public String getName() {
       return name;
   }

   /**
   * @param name the name to set
   */
   public void setName(String name) {
       this.name = name;
   }

   /**
   * @return the postcode
   */
   public String getPostcode() {
       return postcode;
   }

   /**
   * @param postcode the postcode to set
   */
   public void setPostcode(String postcode) {
       this.postcode = postcode;
   }
  
   /**
   * This method adds holiday into the list of holiday
   * @param holiday
   */
   public void addHoliday(Holiday holiday) {
       this.holidays.add(holiday);
   }

   /**
   * This method returns String representation of TravelAgent including holiday
   */
   @Override
   public String toString() {
       //StringBuilder used to make mutable string
       StringBuilder sb = new StringBuilder();
       sb.append(name + " at " + postcode);
       //iterating over all holiday objects in list and used toString of holiday to get String representation of Holiday object
       for (Holiday holiday : holidays) {
           sb.append("\n"+holiday.toString());  
       }
       return sb.toString();
   }
  
  
}