Question

Design and implement a class called Flight that represents an airline flight. It should contain instance data that represents the airline name, flight number, and the flight’s origin and destination cities. Define the Flight constructor to accept and initialize all instance data. Include getter and setter methods for all instance data. Include a toString method that returns a one-line description of the flight. Create a driver class called FlightTest, whose main method instantiates and updates several Flight objects.

Answer 1

Algorithm :

STEP1: Start the program
STEP2: Create a class with Flight with four instance variables
called airLineName, flightName, originCity and destinationCity.
STEP3: Define a constructor of Flight class that takes the values
and the values for the instance variables of the Flight class.
STEP4: Write accessor and mutator methods for all the instance variables of Flight class.
STEP5: Define a method toString that returns the string representation of the instance
variables of the class Flight.
STEP6: Create a test program called FlightTest.java
STEP7: In main method of the class, instantiate two Flight class objects.
STEP8:Call the method toString on each Flight objects that prints the description of
Flight class.
STEP9:Stop the program.

Java program :

/**
* The java program that demonstrates the Flight class . The main method
* instantiates the Flight objects with the airlines name, flight name, origin name
* and destination name. Then call toString method to display the one line
* description of the Flight on console output.
*
* */
//FlightTest.java
public class FlightTest {
   public static void main(String[] args) {
      
       Flight indiObject=new Flight("Indgo", "ABC", "HYD", "DEL");
       System.out.println(indiObject.toString());
      
       Flight kingObject=new Flight("KinFisherAirLines", "XYZ", "NY", "DLS");
       System.out.println(kingObject.toString());
   }
}//end of the class

----------------------------------------------------------------------------------------------------------------------------
//Flight class
//Flight.java
public class Flight
{
   //declare instance variables of class
   private String airLineName;
   private String flightName;
   private String originCity;
   private String destinationCity;
   /*Constructor that sets the values for the instance variables*/
   public Flight(String airLineName, String flightName,
           String originCity, String destinationCity) {
       this.airLineName=airLineName;
       this.flightName=flightName;
       this.originCity=originCity;
       this.destinationCity=destinationCity;
   }
   /**
   * Method to get air line name
   */
   public String getAirLineName() {
       return airLineName;
   }
   /**
   * Method to set air line name
   */
   public void setAirLineName(String airLineName) {
       this.airLineName = airLineName;
   }
   /**
   * Method to get flight name
   */
   public String getFlightName() {
       return flightName;
   }
   /**
   * Method to set the flight name
   */
   public void setFlightName(String flightName) {
       this.flightName = flightName;
   }
   /**
   * Method to get origin city
   */
   public String getOriginCity() {
       return originCity;
   }
   /**
   * Method to set the origin city
   */
   public void setOriginCity(String originCity) {
       this.originCity = originCity;
   }
   /**
   * Method to get destination city
   */
   public String getDestinationCity() {
       return destinationCity;
   }
   /**
   * Method to set the destination city
   */
   public void setDestinationCity(String destinationCity) {
       this.destinationCity = destinationCity;
   }
  
   /*Method returns the one line desription of flight*/
   public String toString() {
       return String.format("Airline Name: %s Flight Name: %s Origin Name: %s Destination Name: %s",
               airLineName,flightName,originCity,destinationCity);
   }
}//End of Flight class

Sample Output:

Airline Name: Indgo Flight Name: ABC Origin Name: HYD Destination Name: DEL
Airline Name: KinFisherAirLines Flight Name: XYZ Origin Name: NY Destination Name: DLS

Answer 2

CODE:

class FlightTest {

public static void main(String[] args)

{

Flight obj1 = new Flight("Chegg",1234,"London","New york");

//Flight obj1 = new Flight();

System.out.println(obj1.name+"\n"+obj1.number+"\n"+obj1.origin+"\n"+obj1.destination);

System.out.println("get name - "+obj1.getName());

System.out.println("get nuber - "+obj1.getName());

System.out.println("get Origin - "+obj1.getName());

System.out.println("get Destination - "+obj1.getName());

obj1.setName("HomeworkLib1");

obj1.setNumber(2345);

obj1.setOrigin("HomeworkLib2");

obj1.setDestination("India");

System.out.println(obj1.name+"\n"+obj1.number+"\n"+obj1.origin+"\n"+obj1.destination);

}

static class Flight {

String name;

int number;

String origin;

String destination;

Flight(String name_t,int number_t,String origin_t,String destination_t)

{

name = name_t;

number = number_t;

origin = origin_t;

destination = destination_t;

}

public void setName(String name_t)

{

name = name_t;

}

public void setNumber(int number_t)

{

number = number_t;

}

public void setOrigin(String origin_t)

{

origin = origin_t;

}

public void setDestination(String destination_t)

{

destination = destination_t;

}

public String getName()

{

return name ;

}

public int getNumber()

{

return number;

}

public String setOrigin()

{

return origin ;

}

public String setDestination()

{

return destination;

}

}

}

OUTPUT: