$($b$)$ Given the class Ship that has a name, berth, and speed write a class BattleShip, demonstrating BattleShip IS$-$A Ship relationship using inheritance.

Class BattleShip requires an gunNo and helipadCount both of type int.

Class Battle Ship must have a constructor, getter and setter methods, and a toString method.

public class Ship $\{$

private String name;

private String berth;

private int speed;

public Ship$($String name, String berth, int speed$)\{$

this.name $=$ name;

this. berth $=$ berth;

this.speed $=$ speed;

;

public String getName $0\{$

return name;

i

public void setName$($String name$)\{$

this.name $=$ name;

i

public String getBerth$(0$ :

return berth;

;

public void setBerth$($String berth$)$ :

this. berth $=$ berth;

;

public int getSpeed $0$ :

return speed;

Page $3$ of $13$

;

public void setSpeed$($int speed$)\{$

this.speed $=$ speed;

$\}$

$($a$)$ Override

public String toString$()$

return "Ship "name$="+$ name $+",$ berth $=+$ berth $+",$ speed $=+$ speed $+7?$;

$3$

;