I\'ve got the Ship, CargoShip, and CruiseShip classes but can\'t figure out the

Question

I've got the Ship, CargoShip, and CruiseShip classes but can't figure out the part in bold. Thanks in advance for the help.

Create a Ship class that has the following members:

- A field for the name of the ship ( name – String data type)

- A field for the year that the shop was built ( year – String data type)

- A constructor and appropriate gets (accessors) and sets (mutators)

- A method called toString that displays the ship ’ s name and the year it was built

Create a CruiseShip class that extends the Ship class. The CruiseShip class should have the following members:

- A field for the maximum number of passengers ( passe ngers – Integer data type)

- A constructor and appropriate gets (accessors) and sets (mutators)

- A method that overrides the toString method in the base class. The CruiseShip class’s toString method should display only the ship ’ s name and the maximum number of passengers the ship can carry.

Create a CargoShip class that extends the Ship class. The CargoShip class should have the following members:

- A field for the cargo capacity in tons ( tons – Integer data type)

- A constructor and appropriate gets (accessors) and sets (mutators)

- A method that overrides the toString method in the base class. The Cargo Ship class’s toString method should display only the ship ’ s name and the maximum number of ton s the ship can carry.

Create a ShipDemo program that asks the user to input ship data. The program should display a menu that allow s the user to enter ships until a - 1 is entered. The program should have a static method called menu that displays the menu. After the user enters a - 1, the program should display the ship informati on that was entered by the user using the toString methods created for each type of ship.

********Menu*********
Enter 1 for a Ship
Enter 2 for a Cruise Ship
Enter 3 for a Cargo Ship
Enter - 1 to exit
Please enter your choice:

My Code:

Ship Class

public class Ship {
   String Ship;
   int year;
   public Ship(String ship, int year)
   {
       this.Ship=ship;
       this.year=year;
   }
   public String getShipName()
   {
       return Ship;
   }
   public int getYear()
   {
       return year;
   }
   public String toString()
   {
       return "Ship Name:"+getShipName()+" Built Year:"+getYear();
   }
}

CruiseShip Class
public class CruiseShip extends Ship{
       int maxPassengers;
       public CruiseShip(String ship, int year, int maxPassengers){
           super(ship, year);
           this.maxPassengers=maxPassengers;
       }
       public int getMaxPassengers()
       {
           return maxPassengers;
       }
       public String toString()
       {
           return " Ship Name:"+getShipName()+" Maximum Number of Passengers:"+getMaxPassengers();
       }
   }

CargoShip Class

public class CargoShip extends Ship{
   int noTons;
   public CargoShip(String name, int year, int noTons){
       super(name, year);
       this.noTons=noTons;
   }
   public int getnoTons(){
       return noTons;
   }
   public String toString(){
       return" Ship Name:"+getShipName()+" Ship Capacity:"+getnoTons();
   }
}

Explanation / Answer

Ship Class
public class Ship {
String Ship;
int year;
public static void main(String[] args){
int i;
System.out.println("Enter choice: 1 for CargoShip, 2 for CruiseShip, -1 to exit ");
Scanner in = new Scanner(System.in);
i = in.nextInt();

if (i=1||i=2)
{
Ship s=new Ship();
CruiseShip cr = new CruiseShip();
CargoShip cs= new CargoShip();
cr.CruiseShip();
cs.CargoShip();

public Ship(String ship, int year)
{
this.Ship=ship;
this.year=year;
}
public String getShipName()
{
return Ship;
}
public int getYear()
{
return year;
}
public String toString()
{
return "Ship Name:"+getShipName()+" Built Year:"+getYear();
}
}
else return 0;
}
}
CruiseShip Class

public class CruiseShip extends Ship{
int maxPassengers;
public CruiseShip(String ship, int year, int maxPassengers){
super(ship, year);
this.maxPassengers=maxPassengers;
}
public int getMaxPassengers()
{
return maxPassengers;
}
public String toString()
{
return " Ship Name:"+getShipName()+" Maximum Number of Passengers:"+getMaxPassengers();
}
}

CargoShip Class

public class CargoShip extends Ship{
int noTons;
public CargoShip(String name, int year, int noTons){
super(name, year);
this.noTons=noTons;
}
public int getnoTons(){
return noTons;
}
public String toString(){
return" Ship Name:"+getShipName()+" Ship Capacity:"+getnoTons();
}
}

note-the above code can help to answer.

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