Я реализовал иерархию классов Mammal в Java. Является ли это разумным подходом к декомпозиции, локальности и процедурной абстракции?

package Hierarchies;

public class Mammals {

    public Mammals(){           
    }

    public void giveMilk(){
        //REQUIRES: nothing
        //MODIFIES: nothing
        //EFFECTS : Display message of produce Milk
        System.out.println("Produce milk to feed their babies.");
    }

    public void haveHair(){
        //REQUIRES: nothing
        //MODIFIES: nothing
        //EFFECTS : Display message of Have Hair
        System.out.println("Have hair on their bodies.");
    }       
}


public class Cats extends Mammals{

    public Cats(){          
    }

    public void Sounds(){
        //REQUIRES: nothing
        //MODIFIES: nothing
        //EFFECTS : Display message of Sound
    System.out.println("Meow Meow Meow!!!.");   
    }
    public void Diet(){
        //REQUIRES: nothing
        //MODIFIES: nothing
        //EFFECTS : Display message of Diet
        System.out.println("Cats are Carnivores.");
    }    
}


public class Elephants extends Mammals {

    public Elephants(){         
    }

    public void Trunk(){
        //REQUIRES: nothing
        //MODIFIES: nothing
        //EFFECTS : Display message of Have Trunk
        System.out.println("Have Trunk.It functions for grasping, breathing, feeding, dusting, smelling, drinking.");
    }

    public void Diet(){
        //REQUIRES: nothing
        //MODIFIES: nothing
        //EFFECTS : Display message of Diet
        System.out.println("Elephants are Herbivorous.");
    }           
}


public class Dogs extends Mammals {

    public Dogs(){          
    }

    public void Bark(){
        //REQUIRES: nothing
        //MODIFIES: nothing
        //EFFECTS : Display message of Bark
    System.out.println("Woo Woo!!!.");  
    }
    public void Diet(){
        //REQUIRES: nothing
        //MODIFIES: nothing
        //EFFECTS : Display message of Diet
        System.out.println("Dogs are Omnivores.");
    }    
}


public class Sporting extends Dogs {

    public Sporting(){          
    }

    public void Race(){
        //REQUIRES: nothing
        //MODIFIES: nothing
        //EFFECTS : Display message of purpose for which they used
        System.out.println("Used For Reacing Purposes.");
    }    
}


public class Working extends Dogs {

    public Working(){           
    }

    public void work(){
        //REQUIRES: nothing
        //MODIFIES: nothing
        //EFFECTS : Display message of work they done
        System.out.println("Learns and performs tasks to assist and entertain its human companions.");
    }    
}


public class Pet extends Dogs {


    public Pet(){           
    }

    public void Work(){
        //REQUIRES: nothing
        //MODIFIES: nothing
        //EFFECTS : Display message of work they done
        System.out.println(" Commonly provide their owners physical and emotional benefits.");
    }
}


public class Hunting extends Dogs {

    public Hunting(){                       
    }

    public void Work(){
        //REQUIRES: nothing
        //MODIFIES: nothing
        //EFFECTS : Display message for their work
        System.out.println(" Hunting dog refers to a canine that hunts with or for humans.");
    }
}


public class WolfHound extends Hunting {

    public WolfHound(){         
    }

    public void Task(){
        //REQUIRES: nothing
        //MODIFIES: nothing
        //EFFECTS : Display message of task they done
        System.out.println(" The breed was originally developed from war hounds to one used for hunting and guarding.");
    }    
}


public class FoxHound extends Hunting {


    public FoxHound(){          
    }

    public void Task(){
        //REQUIRES: nothing
        //MODIFIES: nothing
        //EFFECTS : Display message of task they done
        System.out.println(" A foxhound is a type of large hunting hound bred for strong hunting instincts, great energy, and, like all scent hounds, a keen sense of smell.");

       }
}

Основной метод

import java.util.*;

public class Main {

    public static void main(String[] args) {

        Scanner input=new Scanner(System.in);

        Mammals mam= new Mammals();

        Dogs dog= new Dogs();
        Cats cat=new Cats();
        Elephants elep=new Elephants();

        Sporting sport=new Sporting();
        Working work= new Working();
        Pet pet=new Pet();
        Hunting hunt=new Hunting();

        WolfHound wolf=new WolfHound();
        FoxHound fox =new FoxHound();


        System.out.println("Welcome to Mammals Class !!!");
        System.out.println("1-Dogs ");
        System.out.println("2-Cats ");
        System.out.println("3-Elephants ");
        System.out.println("Enter the Number To which Mamamal Class You GO ");
        int choice=input.nextInt();
        switch(choice){
        case 1:
            System.out.println("1- Sporting ");
            System.out.println("2- Working ");
            System.out.println("3- Pet ");
            System.out.println("4- Hunting ");
            int choice2=input.nextInt();
            switch(choice2){
            case 1:
                sport.giveMilk();
                sport.haveHair();
                sport.Bark();
                sport.Diet();
                sport.Race();
                break;
            case 2:
                work.giveMilk();
                work.haveHair();
                work.Bark();
                work.Diet();
                work.work();
                break;
            case 3:
                pet.giveMilk();
                pet.haveHair();
                pet.Bark();
                pet.Diet();
                pet.Work();

                break;
            case 4:
                System.out.println("1- WolfHound ");
                System.out.println("2- FoxHound ");
                int choice3=input.nextInt();
                switch(choice3){
                case 1:
                    wolf.giveMilk();
                    wolf.haveHair();
                    wolf.Bark();
                    wolf.Diet();
                    wolf.Task();
                    wolf.Work();
                    break;
                case 2:

                    fox.giveMilk();
                    fox.haveHair();
                    fox.Bark();
                    fox.Diet();
                    fox.Work();
                    fox.Task();
                    break;
                default:
                    System.out.println("Invalid Choice");
                    break;

                }
                break;
            default:
                System.out.println("Invalid Choice");
                break;

            }
            break;
        case 2:
            cat.giveMilk();
            cat.haveHair();
            cat.Diet();
            cat.Sounds();

            break;
        case 3:
            elep.giveMilk();
            elep.haveHair();
            elep.Diet();
            elep.Trunk();

            break;
            default:
                System.out.println("Invalid Choice");
                break;
        }
    }    
}

2 ответа

class Pet {
    Animal animal;
}

public interface Domesticable {
  default void provideFriendship() {
    System.out.println("Gives love to owner");
  }
}

Class Dog extends Mammal implements Domesticable

Pig extends Mammal implements Domesticable, Comparable, Edible

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