Java

OOP GUIDE / WORK

SPACESHIP CLASS SOLUTIONS

TASK – PART 1 – SETUP

No solution required

TASK – PART 2 – DATA ENCAPSULATION

Here is my solution:

public class Spaceship

{

private int hp;

private double size;

private String name;

public Spaceship(int tHp, double tSize, String tName)

{

hp = tHp;

size = tSize;

name = tName;

}

public int getHp()

{

return hp;

}

public double getSize()

{

return size;

}

public String getName()

{

return name;

}

public void setHp(int tHp)

{

if (tHp > 0)

{

hp = tHp;

}

}

public void setSize(double tSize)

{

if (tSize > 0)

{

size = tSize;

}

}

public void setName(String tName)

{

if (!tName.equals(""))

{

name = tName;

}

}

public String toString()

{

return name + "(" + hp + "hp)";

}

}

TASK – PART 3 – TESTING YOUR SPACESHIP CLASS

Here is my solution but not that your solution could be fairly different:

public class SpaceshipTester

{

public static void main(String[] args)

{

Spaceship ent = new Spaceship(10, 2400.5, "Enterprise");

//Testing get methods

System.out.println(ent.getHp());

System.out.println(ent.getSize());

System.out.println(ent.getName());

//Testing set methods

System.out.println(ent); //calling toString()

ent.setHp(17);

System.out.println(ent);

ent.setHp(-3); //does nothing

System.out.println(ent);

ent.setSize(4444.4);

System.out.println(ent.getSize());

ent.setSize(-2345.2); //does nothing

System.out.println(ent.getSize());

ent.setName("Millenium Falcon");

System.out.println(ent);

ent.setName(""); //does nothing

System.out.println(ent);

}

}