Zoo

// Animal Class returns name, age, and weight of animal
// Renee Waggoner
// July 22, 2019
// Special Requirements: None
package zoo;

// Note: If you have a mixture of unique and generalized methods that subclasses will inherit, then use Abstract Class as the super class.
// abstract doesn't allow user to modify the class
public abstract class Animal
{
    private String name;
    public double weight;
    private int age;

    // default method
    Animal() {}

    // will be called and used by other classes using key words
    Animal(String n, double weight, int age)
    {
        name = n;
        this.weight = weight;
        this.age = age;
    }

    // abstract so that user can't change it
    abstract String makeNoise();
    double getWeight()
    {
        return weight;
    }
    // returns a string with info about that animal
    public String toString()
    {
        String str = "Name: " + name + " Weight: " + weight + " age: " + age;
        return str;
    }
}
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// Cow Class extends Animal class and returns Mooo
// Renee Waggoner
// July 22, 2019
// Special Requirements: None
package zoo;

public class Cow extends Animal
{
    private int num_spots;

    // default method
    Cow(){}

    Cow(String n, double weight, int age, int no_spots)
    {
        super(n, weight, age);
    }

    String makeNoise()
    {
        return "Mooo";
    }

    public String toString()
    {
        String str = super.toString() + " Spots: " + num_spots + " Noise: " + makeNoise();
        return str;
    }
}
=======================================================================================================================================
// Horse extends Animal class returns Whinny when makeNoise method is called
// Renee Waggoner
// July 22, 2019
// Special Requirements: None
package zoo;

public class Horse extends Animal
{
    // instance variable
    private double top_speed;

    // will be called and used by other classes using key words
    Horse(){}

    Horse(String n, double weight, int age, double top_speed)
    {
        super(n, weight, age);
        this.top_speed = top_speed;
    }

    String makeNoise()
    {
        return "Whinny";
    }

    public String toString()
    {
        String str = super.toString() + " speed: " + top_speed + " Noise: " + makeNoise();
        return str;
    }
}
=======================================================================================================================================
// Snake class extends Animal class and returns Hissssss when the makeNoise method is called
// Renee Waggoner
// July 22, 2019
// Special Requirements: None
package zoo;

public class Snake extends Animal
{
    // instance variable
    private int num_fangs;

    // will be called and used by other classes using key words
    // Note: constructor has to have the same name as the class
    // this is a default constructor
    Snake(){}

    public Snake(String n, double weight, int age, int num_fangs)
    {
        // calling animal constructor
        super(n, weight, age);
        this.num_fangs = num_fangs;
    }

    public String makeNoise()
    {
        return "Hissssss";
    }

    public String toString()
    {
        // calling makeNoise method and adding it to this string
        String str = super.toString() + " fangs: " + num_fangs + " Noise: " + makeNoise();
        return str;
    }
}
=======================================================================================================================================

// Zoo Class provides totals of animals and defining details for the animals as long a number of animals is < number of cages
// Renee Waggoner
// July 22, 2019
// Special Requirements: None
package zoo;

public class Zoo {
    private int actual_num_animals;
    private int num_cages;
    private Animal[] animals;

    Zoo()
    {
        num_cages = 3;
    }

    Zoo(int num_cages)
    {
        actual_num_animals = 0;
        this.num_cages = num_cages;
        animals = new Animal[num_cages];
    }

    void add(Animal a)
    {
        // stops program from never ending
        if (actual_num_animals < num_cages)
        {
            animals[actual_num_animals] = a;
            actual_num_animals++;
        } else {
            System.out.println("Cannot add more animals to the zoo.");
        }// end else statement
    }

    double total_weight()
    {
        // setting decimal because given code had one decimal
        double totalWeight = 0.0;
        // generating the numbers
        for (int i = 0; i < actual_num_animals; i++)
        {
            // calling getWeight method
            totalWeight += animals[i].getWeight();
        }
        return totalWeight;
    }

    void make_all_noises()
    {
        // generating the numbers
        for (int i = 0; i < actual_num_animals; i++)
        {
            System.out.println(animals[i].makeNoise());
        }
    }

    void print_all_animals()
    {
        // prints under Animal Printout
        for (int i = 0; i < actual_num_animals; i++)
        {
            System.out.println(animals[i]);
        }
    }

    public static void main(String[] args)
    {
        Zoo z = new Zoo(4);
        Snake sly = new Snake("Sly", 5.0 , 2, 2);
        Snake sly2 = new Snake("Slyme", 10.0 , 1, 2);
        Cow blossy = new Cow("Blossy", 900., 5, 10);
        Horse prince = new Horse("Prince", 1000., 5, 23.2);

        //Following not allowed because Animal is abstract
        //Animal spot = new Animal("Spot", 10., 4);

        z.add(sly);
        z.add(sly2);
        z.add(blossy);
        z.add(prince);

        z.make_all_noises();
        // calling total_weight method to print total
        System.out.println("Total weight = " + z.total_weight());
        System.out.println("**************************");
        System.out.println("Animal Printout: ");
        z.print_all_animals();

        System.out.println("********* Now we will make the Second Zoo");
        Zoo z2 = new Zoo(5);
        z2.add(sly);
        z2.add(sly2);
        z2.add(blossy);
        z2.add(prince);
        z2.add( new Horse("Warrior", 1200, 6, 25.3));
        z2.add( new Horse("Harry", 1100, 4, 21.3));
        // printing total weight using total_weight method for second zoo
        System.out.println("Total weight of z2 = "+z2.total_weight());
        z2.make_all_noises();
        z2.print_all_animals();
    }// end of main
}// end of zoo class