5/2/2015ITK 1791 Shape {abstract} - ShapeName: String # setShapeName(newShapeName: String): void + getShapeName(): String + getSurfaceArea(): double +

04/18/23 ITK 179 1

Shape {abstract}

- ShapeName: String

# setShapeName(newShapeName: String): void

+ getShapeName(): String

+ getSurfaceArea(): double

+ getPerimeter(): double

Rectangle

- length: double

- height: double

+ setLength(newLength: double): void

+ getLength(): double

+ setHeight(newHeight: double): void

+ getHeight(): double

Circle

- radius: double

+ setRadius(newRadius: double): void

+ getRadius(): double

There are some detailsthat are not as important to the concepts (classes)

04/18/23 ITK 179 2

interface Object

Shape

CircleRectangle

RectanglePrism Cylinder

{abstract}ThreeD

{interface}

+ setDepth(double): void

+ getDepth(): double

+ getVolume(): double

implements

04/18/23 ITK 275 3

public abstract class Animal {

private int weight;

public Animal(int lb) { // constructor;

weight = lb;

}

public abstract String is_a(); // What animal is this;

public abstract String eats(); // the food it eats;

public abstract String sounds(); // the sound it makes;

public int Weight() { // return the weight;

return weight;

}

}

Animal

04/18/23 ITK 275 4

public abstract class WildAnimal extends Animal {

private String fHabit;

private String NativePlace=null;

public WildAnimal(String feedingHabit, int weight) {

super(weight);

this.fHabit = feedingHabit;

}

public String feedingHabit() { return fHabit;}

public void lives_in(String NativePlace) {

this.NativePlace = NativePlace;

}

public String lives_in() { return NativePlace;}

}

WildAnimal

04/18/23 ITK 275 5

public abstract class DomesticAnimal extends Animal{

private String purpose, my_name=null;

public DomesticAnimal(String purpose, int weight) {

super(weight);

this.purpose = purpose;

}

public String name() { return my_name; }

public void name(String name) {

my_name = name;

}

public String is_for() { return purpose; }

}

DomesticAnimal

04/18/23 ITK 275 6

public class Elephant extends WildAnimal{

public Elephant(int weight) {

super("herbivorous", weight);

}

public String is_a() {

return "elephant";

}

public String eats() {

return "banana";

}

public String sounds() {

return "enheeen";

}

}

Elephant

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public abstract class BigCat extends WildAnimal{

public BigCat(int weight) {

super("carnivorous", weight);

}

}

BigCat

public class Tiger extends BigCat{ public Tiger(int weight) {

super(weight); }

public String is_a() { return "tiger"; }

public String sounds() { return "Grrr! Grrr! "; }

public String eats() { return "meat"; }

}

Tiger

04/18/23 ITK 275 8

public class Lion extends BigCat{

public Lion(int weight) {

super(weight);

}

public String is_a() {

return "lion";

}

public String sounds() {

return "Roarn! Roand!";

}

public String eats() {

return "meat";

}

}

Lion

04/18/23 ITK 275 9

public class Cow extends DomesticAnimal {

public Cow (int weight) {

super("milk",weight);

}

public String is_a() {

return "cow";

}

public String sounds() {

return "Mooo! Mooo!";

}

public String eats() {

return "grass";

}

}

Cow

04/18/23 ITK 275 10

public interface Pet {

public String address();

public String likes();

}

Pet

public class Dog extends DomesticAnimal implements Pet { private String my_address;

public Dog (String name, int weight) {super("pleasure",weight);this.name(name);

} public String is_a() { return "dog"; }

public String sounds() { return "Woof! Woof!"; }

public String likes() { return "bone"; }

public String eats() { return likes(); }

public String address() { return my_address; }

public String address(String add) { return my_address = add; }}

Dog

04/18/23 ITK 275 11

public class Cat extends DomesticAnimal implements Pet {

private String my_address;

public Cat (String name, int weight) {

super("pleasure",weight);

this.name(name);

}

public String is_a() { return "cat"; }

public String sounds() { return "Meow! Meow!"; }

public String likes() { return "fish"; }

public String eats() { return likes(); }

public String address() { return my_address; }

public String address(String add) { return my_address = add;}

}

Cat

04/18/23 ITK 275 12

public static void aboutThisDomesticAnimal(DomesticAnimal x) {

System.out.println(" Variable x is a " + x.is_a() +".");

System.out.println(x.name() + " is a " + x.Weight()+" ponds "+ x.is_a() + " for " + x.is_for() + "." );

}

public static void aboutThisWildAnimal(WildAnimal x) {

System.out.println(" Variable x is a " + x.is_a() +".");

System.out.println("This " + x.is_a() + " weights " +

x.Weight() + " pounds.");

System.out.println("The " + x.is_a() + " is a " +

x.feedingHabit()+" animal from " + x.lives_in()+".");

}

04/18/23 ITK 275 13

Animal animal[];

Dog lucky;

Cat mimi;

Cow daisy;

Tiger T;

Lion L;

Elephant E;

animal = new Animal[6];

animal[0] = lucky = new Dog("Lucky", 25);

lucky.address("Bloomington");

animal[1] = mimi = new Cat("Mimi", 15);

mimi.address("Normal");

animal[2] = daisy = new Cow(500);

daisy.name("Daisy");

animal[3] = T = new Tiger(300);

T.lives_in("Asia");

animal[4] = L = new Lion(400);

L.lives_in("Africa");

animal[5] = E = new Elephant(1200);

E.lives_in("Africa");

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for (int i=0; i<animal.length;i++)

{

System.out.print("\n"+i+": ");

if (animal[i] instanceof DomesticAnimal) {

aboutThisDomesticAnimal((DomesticAnimal) animal[i]);

}

if (animal[i] instanceof WildAnimal) {

aboutThisWildAnimal((WildAnimal) animal[i]);

}

}

04/18/23 ITK 275 15

public interface Bird {

String color();

}

Bird

Cardinal

04/18/23 ITK 275 16

Canary