I am not sure why my Java code is not returning the right funds or the city name
ID: 3887369 • Letter: I
Question
I am not sure why my Java code is not returning the right funds or the city name.
Here is the code:
Traveler Class
package hw1;
/**
*
* @author morgansmith
*
*/
/**
* Model of a traveler for use with city class
*/
public class Traveler {
/**
* Sympathy factor per postcard sent home
*/
public static final int SYMPATHY_FACTOR = 30;
/**
* The balance of funds available
*/
private int funds;
/**
* Nights spent at the train station
*/
private int nightsAtStation = 0;
/**
* Number of postcards sent home
*/
private int postcards;
/**
* Number of nights in a city
*/
private int numberNights;
/**
* Name of the city
*/
private String name;
/**
* Current city the traveler is in.
*/
private City currentCity = new City(name, funds);
/**
* String of a journal of where the traveler has gone.
*/
private String journal;
/**
*
* @param initialFunds
* @param initialCity
*/
public Traveler(int initialFunds, City initialCity) {
funds = initialFunds;
name = currentCity.getName();
journal = name + " (Start), ";
}
/**
* Returns City name
* @return
* city name
*/
public String getCurrentCity() {
return name;
}
/**
* Balance of funds
* @return
* funds
*/
public int getCurrentFunds() {
return funds;
}
/**
* Returns journal string
* @return
* journal
*/
public String getJournal() {
return journal;
}
/**
* Returns true if they cannot afford to send a postcard
* @return
* true if not enough funds
*/
public boolean isSOL() {
return (funds > currentCity.costToSendPostcard());
}
/**
* Returns the number of nights at the train station
* @return
* nights at station
*/
public int getTotalNightsInTrainStation() {
return nightsAtStation;
}
/**
*
* @param c
* @param numNights
*/
public void visit(City c, int numNights) {
currentCity = c;
numberNights = numNights;
journal = journal + currentCity.getName() + " (" + numberNights + "),";
funds = funds - (currentCity.maxLengthOfStay(numberNights) * currentCity.lodgingCost());
nightsAtStation = nightsAtStation + (numberNights - (currentCity.maxLengthOfStay(numberNights)));
}
/**
*
* @param howMany
*/
public void sendPostcardsHome(int howMany) {
funds = (funds - (howMany * currentCity.maxNumberOfPostcards(howMany)));
postcards = postcards + howMany;
}
/**
* Increases funds in relation to number of post cards.
*/
public void callHomeForMoney() {
funds = (funds + (postcards * SYMPATHY_FACTOR));
}
City class:
package hw1;
/**
*
* @author morgansmith
*
*/
/**
*
* Model of a city for use with traveler class
*
*/
public class City {
/**
* Cost to send a postcard from this city
*/
public static final double RELATIVE_COST_OF_POSTCARD = 0.05;
/**
* Name of the city
*/
private String name;
/**
* Cost of lodging
*/
private int lodgingCost;
/**
*
* @param givenName
* @param givenLodgingCost
*/
public City(String givenName, int givenLodgingCost) {
name = givenName;
lodgingCost = givenLodgingCost;
}
/**
* Returns the name of the city
* @return
* city name
*/
public String getName() {
return name;
}
/**
* Returns the cost of lodging
* @return
* lodging cost
*/
public int lodgingCost() {
return lodgingCost;
}
/**
* Returns the cost to send a postcard
* @return
* cost to send a postcard
*/
public int costToSendPostcard() {
double costToSend = (lodgingCost * RELATIVE_COST_OF_POSTCARD);
return ((int) Math.round(costToSend));
}
/**
* Returns the max length of stay based on funds
* @param funds
* @return
* max length of stay
*/
public int maxLengthOfStay(int funds) {
return (funds / lodgingCost);
}
/**
* Returns the max number of postcards based on funds
* @param funds
* @return
* max number of postcards
*/
public int maxNumberOfPostcards(int funds) {
double maxNumber = (funds / Math.ceil(lodgingCost * RELATIVE_COST_OF_POSTCARD));
return (int) maxNumber;
}
}
}
Explanation / Answer
//Modified Traveler class.Modifications are in bold letters
public class Traveler {
/**
* Sympathy factor per postcard sent home
*/
public static final int SYMPATHY_FACTOR = 30;
/**
* The balance of funds available
*/
private int funds;
/**
* Nights spent at the train station
*/
private int nightsAtStation;
/**
* Number of postcards sent home
*/
private int postcards;
/**
* Number of nights in a city
*/
private int numberNights;
/**
* Name of the city
*/
private String name;
/**
* Current city the traveler is in.
*/
//Note: Declaration of City variable
//Not to intialize the currentCity object
//without arguments
private City currentCity ;
/**
* String of a journal of where the traveler has gone.
*/
private String journal;
/**
*
* @param initialFunds
* @param initialCity
*/
public Traveler(int initialFunds, City initialCity) {
//assign the initialFunds to funds
funds = initialFunds;
//set initialCity to the currentCity
currentCity = initialCity;
name = currentCity.getName();
journal = name + " (Start), ";
}
/**
* Returns City name
* @return
* city name
*/
public String getCurrentCity() {
return name;
}
/**
* Balance of funds
* @return
* funds
*/
public int getCurrentFunds() {
return funds;
}
/**
* Returns journal string
* @return
* journal
*/
public String getJournal() {
return journal;
}
/**
* Returns true if they cannot afford to send a postcard
* @return
* true if not enough funds
*/
public boolean isSOL() {
return (funds > currentCity.costToSendPostcard());
}
/**
* Returns the number of nights at the train station
* @return
* nights at station
*/
public int getTotalNightsInTrainStation() {
return nightsAtStation;
}
/**
*
* @param c
* @param numNights
*/
public void visit(City c, int numNights) {
currentCity = c;
numberNights = numNights;
journal = journal + currentCity.getName() + " (" + numberNights + "),";
funds = funds - (currentCity.maxLengthOfStay(numberNights) * currentCity.lodgingCost());
nightsAtStation = nightsAtStation + (numberNights - (currentCity.maxLengthOfStay(numberNights)));
}
/**
*
* @param howMany
*/
public void sendPostcardsHome(int howMany) {
funds = (funds - (howMany * currentCity.maxNumberOfPostcards(howMany)));
postcards = postcards + howMany;
}
/**
* Increases funds in relation to number of post cards.
*/
public void callHomeForMoney() {
funds = (funds + (postcards * SYMPATHY_FACTOR));
}
}
Note:Check the code with your main method class since the main method class not available.
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