prob3

Class Trip

Object

Trip

public class Trip
extends Object

Represents a sequence of contiguous flights from an origin to a destination. Each flight is referred to as a leg. For example, a one-stop trip would be composed of two legs. For example, a trip from Valdosta to New York City might have the first from Valdosta to Atlanta, and the second leg from Atlanta to New York City. Similarly, a two-stop trip would be composed for 3 legs. For example, a trip from Valdosta to Seattle might be comprised of legs: Valdosta->Atlanta, Atlanta->Chicago, Chicago-> Atlanta.

Field Summary

Fields

Modifier and Type	Field and Description
private List<Flight>	legs The list of flights (legs) that comprise this trip

Constructor Summary

Constructors

Constructor and Description
Trip() Creates a trip with no legs, my solution does not have any code for this constructor.
Trip(List<Flight> legs) Initializes a trip with a list of legs.

Method Summary

Modifier and Type	Method and Description
void	addLeg(Flight leg) Adds a leg to this trip.
private boolean	doesDateMatch(Flight previousLeg, Flight nextLeg) Optional, this is a helper method I wrote.
private boolean	doesDestinationOriginMatch(Flight previousLeg, Flight nextLeg) Optional, this is a helper method I wrote.
double	getCost() Returns the total cost of trip across all legs.
LocalDate	getDate() Returns the date of the trip.
Airport	getDestination() Returns the airport where trip ends.
double	getDistance() Returns the total distance of trip across all legs.
private String	getHeader() Optional, this is a helper method I wrote.
List<Flight>	getLegs() Returns the list of legs.
private String	getLegsMsg() Optional, this is a helper method I wrote.
int	getNumLegs() Returns the number of legs.
Airport	getOrigin() Returns the airport where trip begins.
private String	location(Airport a) Optional, this is a helper method I wrote.
String	toString() Returns a string exactly in the format show below (by example).

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

legs

private List<Flight> legs

The list of flights (legs) that comprise this trip

Constructor Detail

Trip

public Trip()

Creates a trip with no legs, my solution does not have any code for this constructor.

Trip

public Trip(List<Flight> legs)

Initializes a trip with a list of legs. This is intended to be used for testing only.

Parameters:

legs -

Method Detail

addLeg

public void addLeg(Flight leg)

Adds a leg to this trip. This method throws an exception if either: (a) the destination of the immediately preceding leg, if it exists, is NOT the same as the origin of the leg being added, or (b) the date of the immediately preceding leg, if it exists is NOT the same as the date of the leg being added. For example, consider a trip that is being built and you add the first leg: Valdosta->Atlanta on Dec 1. Since this is the first leg, it is added with no possibility of throwing an exception. Suppose you try to add the second leg: Birmingham->DC on Dec 1. Then, this method would throw an exception because the first leg's destination (Atlanta) does not match the second leg's origin (Birmingham). Similar if the dates don't match. For example: first leg, Valdosta->Atlanta on Dec 1, 2020. Then, second leg, Atlanta->Chicago on Dec 2, 2020 will throw an exception because the dates don't match.

Parameters:

leg - Flight to be added to this trip.

doesDateMatch

private boolean doesDateMatch(Flight previousLeg,
                              Flight nextLeg)

Optional, this is a helper method I wrote. You are not required to write such a method.

doesDestinationOriginMatch

private boolean doesDestinationOriginMatch(Flight previousLeg,
                                           Flight nextLeg)

Optional, this is a helper method I wrote. You are not required to write such a method.

getCost

public double getCost()

Returns the total cost of trip across all legs.

Returns:

getDate

public LocalDate getDate()

Returns the date of the trip.

Returns:

getDestination

public Airport getDestination()

Returns the airport where trip ends.

Returns:

getDistance

public double getDistance()

Returns the total distance of trip across all legs.

Returns:

getHeader

private String getHeader()

Optional, this is a helper method I wrote. You are not required to write such a method.

getLegs

public List<Flight> getLegs()

Returns the list of legs.

Returns:

getLegsMsg

private String getLegsMsg()

Optional, this is a helper method I wrote. You are not required to write such a method.

getNumLegs

public int getNumLegs()

Returns the number of legs.

Returns:

getOrigin

public Airport getOrigin()

Returns the airport where trip begins.

Returns:

location

private String location(Airport a)

Optional, this is a helper method I wrote. You are not required to write such a method. Method is also in Flight class. Probably belongs in Airport class, then no duplication, but didn't want to change Airport since already assigned.

Returns:

toString

public String toString()

Returns a string exactly in the format show below (by example). Note that the distance should have no decimals and the cost should be formated as currency (2 decimals, $ sign, "," separator.

 Trip Date: 2020-06-18
      From: VLD-Valdosta, GA
        To: ANB-Anniston, AL
  Distance: 245 miles, Cost: $345.00
  
  Leg 1
    Flight: 1234, Date: 2020-06-18
      From: VLD-Valdosta, GA
        To: CSG-Columbus, GA
  Distance: 154 miles, Cost: $144.50

  Leg 2
    Flight: 1235, Date: 2020-06-18
      From: CSG-Columbus, GA
        To: ANB-Anniston, AL
  Distance: 91 miles, Cost: $200.50
 

Overrides:

toString in class Object

Returns: