Question

Program in Java: Use​ ​the​ ​Factory​ ​pattern​ ​to​ ​address​ ​the​ ​following​ ​challenge...

Your job is to make it easy to obtain a Pet from a factory-like class:

● Pet is an abstract class that has 2 attributes

○ Name

○ Sound

● You should create 3 concrete types of pets

○ Parakeet (makes the sound "Tweet tweet")

○ Dog (makes the sound "Woof woof")

○ Lion (makes the sound "Roar roar")

● You should create a factory class that allows the caller to create pets by specifying

○ Name

○ Acres of land where pets will live

● The # of acres of land determines what kind of pet is assigned

○ 1​ ​acre​ ​or​ ​less:​ ​parakeet

○ 4​ ​acre​ ​or​ ​less:​ dog

○ 9​ ​acre​ ​or​ ​less:​ lion

● Smaller pets are always preferred over larger ones

○ For example if the caller has 2 acres, then a new Dog should be returned.

*Your​ ​solution​ ​should​ ​minimally​ ​include​ ​6​ ​classes:

● The abstract Pet and concrete classes (4 classes)

● Factory class (1 class)

● An additional Test class

○ Should demonstrate getting pets for the following acre sizes: 0, 3, 7

○ For each pet retrieved, print out its sound (to the output).

Answer 1

Hello
Your required program is here.

abstract class Pet
{
String Name,Sound;
public void show();
}

class Parakeet
{
String Name,Sound;
Parakeet()
{
Name="parakeet";
Sound="Tweet tweet";
}
public void show()
{
System.out.println("Sound of Parakeet is "+Sound);
}
}

class Dog
{
String Name,Sound;
Dog()
{
Name="dog";
Sound="Woof woof";
}
public void show()
{
System.out.println("Sound of Dog is "+Sound);
}
}

class Lion
{
String Name,Sound;
Lion()
{
Name="lion";
Sound="Roar roar";
}
public void show()
{
System.out.println("Sound of Lion is "+Sound);
}
}

class Factory
{
String Name;
int acres;

public void createPets(int acres)
{
this.acres=acres;
if(acres==0)
   Name="";
if(acres<=1)
   Name="parakeet";
else if(1<acres<=4)
   Name="dog";
else if(4<acres<=9)
   Name="lion";
}
public String showName()
{
String s=Name;
return s;
}
}

class Test
{
public static void main(String args[]) throws IOException
{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
Factory f1=new Factory();
System.out.println("Enter how much acres of land:");
a=Integer.parseInt(br.readLine().trim());
f1.createPets(a);
String name=f1.showName();
if(name=="parakeet")
{
   Parakeet p=new Parakeet();
   p.show();
}
else if(name=="dog")
{
   Dog d=new Dog();
   d.show();
}
else if(name=="lion")
{
   Lion l=new Lion();
   l.show();
}
else               //if acres=0
{
   System.out.println("No pet");
}
}
}

//Hope you will give positive feedback for this