In Java PET LIST Create a class called Pet which contains: A field for the name

Question

In Java

PET LIST Create a class called Pet which contains: A field for the name of the pet A field for the age of the pet Appropriate constructor and accessors Create a class called Dog which extends the Pet class and has: A field for breed of dog A field for body weight Appropriate constructor and accessors A toString method that prints the name, age, breed and weight of the dog Create a class called Cat which extends the Pet class and has: A field that describes the coat of the cat (example: short/long/plush/silky/soft) A field for whether it is a lap cat Appropriate constructor and accessors A toString method that prints the name, age and coat type of the cat, and whether it is a lap cat Create a class called Fish which extends the Pet class and has: A field for type of fish A field for the color of its scales Appropriate constructor and accessors A toString method that prints the name, age, type and scale color of the fish Write a main which asks the user to enter the number of pets (n) and then ask for the details for each pet. Ask for the correct information depending on the type of pet. Create a Dog, Cat or Fish object as required. Add each pet to an ArrayList of Pets. After all information is entered and stored, print out the gathered information of all objects in the list, starting with the all the Fish first, then Cats and then Dogs.

Explanation / Answer

Hi,

Please Create a Package named "PetsPackage" having the following classes -

Cat.java

Dog.java

Fish.java

Main.java

Pet.java

Given below is the detailed code for each of the classes along with the comments:

//Cat.java

package PetsPackage;

//class Cat which inherits the class pet
public class Cat extends Pet{
   //variables local to the class cat
   String catCoat;
   String islapCat;
  
   //assign the values to the local variables. Also call the parent constructor for name and age assignment
   public Cat(String petName, int petAge, String catCoat, String islapCat) {
       super(petName, petAge);
       this.catCoat = catCoat;
       this.islapCat = islapCat;
   }
  
   // to get cat's coat
   public String getCatCoat() {
       return catCoat;
   }
  
   //to set cat's coat
   public void setCatCoat(String catCoat) {
       this.catCoat = catCoat;
   }
  
   // to get islapcat?
   public String getIslapCat() {
       return islapCat;
   }
  
   //to set isLapCat?
   public void setIslapCat(String islapCat) {
       this.islapCat = islapCat;
   }
  
   //String representation of the object
   public String toString(){
       return "Name,Age,Coat and isLapCat :"+petName+" "+petAge+" "+catCoat+" "+islapCat;
   }
  

}

----------------------------------------------------

//Dog.java

package PetsPackage;

//class Dog which inherits the class pet
public class Dog extends Pet{
  
   //variables local to the class dog
   String dogBreed;
   int dogWeight;
  
   //to get dog's breed
   public String getDogBreed() {
       return dogBreed;
   }
  
   // to set the dog's breed
   public void setDogBreed(String dogBreed) {
       this.dogBreed = dogBreed;
   }
  
   //to get the dog's weight
   public int getDogWeight() {
       return dogWeight;
   }
  
   //to set the dog'd weight
   public void setDogWeight(int dogWeight) {
       this.dogWeight = dogWeight;
   }
  
   //assign the values to the local variables. Also call the parent constructor for name and age assignment
   public Dog(String petName, int petAge, String dogBreed, int dogWeight) {
       super(petName, petAge);
       this.dogBreed = dogBreed;
       this.dogWeight = dogWeight;
   }
  
   //String representation of the object
   public String toString(){
       return "Name,Age,Breed and Weight :" +petName+" "+petAge+" "+dogBreed+" "+dogWeight;
   }
  
}

-----------------------------------------------------

//Fish.java

package PetsPackage;

//class Fish which inherits the class pet
public class Fish extends Pet{
  
   //variables local to the class fish
   String fishType;
   String fishColor;
  
   //assign the values to the local variables. Also call the parent constructor for name and age assignment
   public Fish(String petName, int petAge, String fishType, String fishColor) {
       super(petName, petAge);
       this.fishType = fishType;
       this.fishColor = fishColor;
   }
  
   //to get fish type
   public String getFishType() {
       return fishType;
   }
  
   //to set fish type
   public void setFishType(String fishType) {
       this.fishType = fishType;
   }
  
   //to get fish color
   public String getFishColor() {
       return fishColor;
   }
  
   //to set fish color
   public void setFishColor(String fishColor) {
       this.fishColor = fishColor;
   }
  
   ////String representation of the object
   public String toString(){
       return "Name,Age,Type and Scales Color"+petName+" "+petAge+" "+fishType+" "+fishColor;
   }

}

--------------------------------------------

//Main.java

package PetsPackage;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {
   //ArrayList to store the pet details
   static List<Pet> pets = new ArrayList<Pet>();
  
   //main method to take the count of pets and iterate
   public static void main(String args[]){
       Scanner input = new Scanner(System.in);
       System.out.println("Enter the number of pets you have (n)");
       int number=input.nextInt();
       //iterate for the number of pets entered
       for(int i=1;i<=number;i++)
       {  
          
           System.out.println("Enter the type of your pet "+i+":: DOG/CAT/FISH");
           String petType=input.next();
          
           //method call to get further details of the pet
           getpetDetails(petType,input);
       }
      
       //close the scanner instance
       input.close();
       //method to print the details of pet from the arrayList
       printPetDetails();
   }
  
   //method to print the details of the pet by iterating over the ArrayList
   private static void printPetDetails() {
       //iterate over,find the entries for fish and print
       for(int i=0;i<pets.size();i++)
           if(pets.get(i) instanceof Fish){
               System.out.println(pets.get(i).toString());
           }
       //iterate over,find the entries for cat and print
       for(int i=0;i<pets.size();i++)
           if(pets.get(i) instanceof Cat){
               System.out.println(pets.get(i).toString());
           }
       //iterate over,find the entries for dog and print
       for(int i=0;i<pets.size();i++)
           if(pets.get(i) instanceof Dog){
               System.out.println(pets.get(i).toString());
           }
   }

   //method to get the specific details of the pets
   private static void getpetDetails(String petType,Scanner petDetails) {
       try{
           System.out.println("Enter the pet's name:");
           String petName = petDetails.next();
           System.out.println("Enter the pet's age:");
           int petAge=petDetails.nextInt();
          
           //switch based on the type of pet
           switch(petType.toUpperCase()){
      
           case "DOG":
               System.out.println("Enter the pet's breed:");
               String petBreed=petDetails.next();
               System.out.println("Enter the pet's weight");
               int petWeight=petDetails.nextInt();
               //create a object of the dog class and assign the value by calling the parameterized constructor
               Dog dog=new Dog(petName,petAge,petBreed,petWeight);
               //add the object to the arrayList
               pets.add(dog);
               break;
           case "CAT":
               System.out.println("Enter the pet's coat:");
               String petCoat=petDetails.next();
               System.out.println("Is the pet a lap cat? Please enter YES or NO");
               String petlap=petDetails.next();
               //create a object of the cat class and assign the value by calling the parameterized constructor
               Cat cat=new Cat(petName,petAge,petCoat,petlap);
               //add the object to the arrayList
               pets.add(cat);
               break;
           case "FISH":
               System.out.println("Enter the pet's type:");
               String typePet=petDetails.next();
               System.out.println("Enter the pet's color of scales");
               String petScalesColor=petDetails.next();
               //create a object of the fish class and assign the value by calling the parameterized constructor
               Fish fish=new Fish(petName,petAge,typePet,petScalesColor);
               //add the object to the arrayList
               pets.add(fish);
               break;
           }
       }
       catch(Exception ex){
           System.out.println("Exception caught."+ ex.getMessage() + "/n Please restart the program");
       }
      
   }

}

---------------------------------------------

//Pet.java

package PetsPackage;

// create the parent pet class
public class Pet {
   //String variable for the name and age of the pet
   protected String petName;
   protected int petAge;
  
   //constructor to assign the values
   public Pet(String petName, int petAge) {
       this.petName = petName;
       this.petAge = petAge;
   }
  
   //to get the age
   public int getPetAge() {
       return petAge;
   }
  
   // to set the age
   public void setPetAge(int petAge) {
       this.petAge = petAge;
   }

   //to get the name  
   public String getPetName() {
       return petName;
   }
  
   //to set the name
   public void setPetName(String petName) {
       this.petName = petName;
   }

}

----------------------------------------

Thank You!!!

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