Question

Build a class called “Animal” which has three attributes: “ArrayList<String> diet”, “int numOfLegs”, and “Boolean carnivore”. Build a constructor with three parameters to set the three attributes. In the constructor, if the number of legs given in the parameter is below 0 set the number of legs equal to 0. Add seven methods:

• “void addToDiet(String item)” which will add a single item to the animals diet
• “void addToDiet(ArrayList<String> items)” which will add all items given to the animals diet
• “void setDiet(ArrayList<String> newDiet)” which will set the animals diet to be the new diet
• “ArrayList<String> getDiet()” returns the animals diet
• “Boolean isCarnivore()” returns if the animal is a carnivore or not
• “int getNumOfLegs()” returns the animal’s number of legs
• “String makeSound()” returns the string “Any Sound”

Now that we have a base class, we’re going to make a subclass of our “Animal” class. Make a class called “Cat” that is a subclass of “Animal”. In “Cat” add a new attribute “String color”. Build a constructor with two parameters, an arrayList<String> diet and String color, in the new constructor call the superClass’s constructor and assume the number of legs of all cats is 4 and every cat is a carnivore. Add a method “String getColor()” that returns the cat’s color. Replace (override) the original “makeSound()” method with a new “makeSound()” function that returns the string “Meow”.

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
=================================

// Animal.java

import java.util.ArrayList;

public class Animal {
   //Declaring instance variables
   private ArrayList<String> diet;
   private int numOfLegs;
   private boolean carnivore;

   /**
   * @param diet
   * @param numOfLegs
   * @param carnivore
   */
   public Animal(ArrayList<String> diet, int numOfLegs, boolean carnivore) {
       this.diet = diet;
       if (numOfLegs < 0)
           this.numOfLegs = 0;
       else
           this.numOfLegs = numOfLegs;
       this.carnivore = carnivore;
   }

   //This method will add item to the Animal Diet ArrayList
   public void addToDiet(String item) {
       diet.add(item);
   }

   void addToDiet(ArrayList<String> items) {
       for (int i = 0; i < items.size(); i++) {
           diet.add(items.get(i));
       }
   }

   void setDiet(ArrayList<String> newDiet) {
       this.diet = newDiet;
   }

   public ArrayList<String> getDiet() {
       return diet;
   }

   public boolean isCarnivore() {
       if (carnivore)
           return true;
       else
           return false;
   }

   public int getNumOfLegs() {
       return numOfLegs;
   }

   public String makeSound() {
       return "BOw Bow";
   }

}

=====================================

// Cat.java

import java.util.ArrayList;

public class Cat extends Animal {
   private String color;

   /**
   * @param diet
   * @param numOfLegs
   * @param carnivore
   * @param color
   */
   public Cat(ArrayList<String> diet, String color) {
       super(diet, 4, true);
       this.color = color;
   }

   /**
   * @return the color
   */
   public String getColor() {
       return color;
   }

   /**
   * @param color
   * the color to set
   */
   public void setColor(String color) {
       this.color = color;
   }

   @Override
   public String makeSound() {
       return "Meow";
   }

}

=================================

// Test.java

import java.util.ArrayList;

public class Test {

   public static void main(String[] args) {
       ArrayList<String> diet = new ArrayList<String>();
       diet.add("Chicken");
       diet.add("Meat");

       //Creating an instance of Animal class
       Cat a = new Cat(diet,"White");
      
       //Adding item to the animal diet
       a.addToDiet("Biscuits");

       System.out.println("Animal Diet :");
       ArrayList<String> arl = a.getDiet();
       for (int i = 0; i < arl.size(); i++) {
           System.out.println(arl.get(i));
       }
       System.out.println("No of Legs :"+a.getNumOfLegs());
       System.out.println("Cat color :"+a.getColor());
       System.out.println("Cat makes \""+a.makeSound()+"\" sound");
       boolean b=a.isCarnivore();
       if(b)
       {
           System.out.println("Cat is carnivore");
       }
       else
       {
           System.out.println("Cat is not carnivore");
       }

      
   }

}

========================

Output:

Animal Diet :
Chicken
Meat
Biscuits
No of Legs :4
Cat color :White
Cat makes "Meow" sound
Cat is carnivore

=====================Could you plz rate me well.Thank You