/** * A Cat "is-a" domestic animal! * This means that it has all of the state and behavior of a DomesticAnimal and an Animal, * plus a little bit more! * * extends tells Cat that it is a DomesticAnimal */ public class Cat extends DomesticAnimal{ /** * What additional state might a Cat have? * Because Cat extends DomesticAnimal, which extends Animal, it already has: * name, color, hungerLevel, favoriteFood, owner, and address. * * A Cat has a meow, a breed, and is grumpy or not, which a WildAnimal and an Animal don't * necessarily have! * This is why these traits ("state") are defined in Cat. */ private String breed; private boolean isGrumpy; private String meow; /** * This is the constructor for a Cat. First, we send the necessary information to * its super constructor in DomesticAnimal. Then, that constructor calls its super constructor in * Animal. We then return to this constructor and set the remaining state unique to Cats. * All of these constructor calls result in a new Cat with complete state! */ public Cat(String color, String name, String favoriteFood, String owner, String address, String breed){ super(color, name, favoriteFood, owner, address); isGrumpy = true; meow = "Meow meow!"; this.breed = breed; } /** * A Cat already has all of the behavior defined in DomesticAnimal and Animal. * Below is the additional behavior that a Cat would have, but * wouldn't make sense for EVERY animal to have! */ /** * What if I want different cats to make different sounds, but I want to keep * "Meow meow!" as the default value? * I can use a setter to reset meow for any instance of Cat! */ public void setMeow(String newSound){ meow = newSound; } public void makeMeow(){ System.out.println(getName() + " says " + meow); } public String getMeow(){ return meow; } public String getBreed(){ return breed; } public boolean getIsGrumpy(){ return isGrumpy; } public void setIsGrumpy(){ if(isGrumpy){ isGrumpy = false; } else{ isGrumpy = true; } } //Creating an "instance" (an actual, manipulative "object" to interact with code) of Cat public static void main(String[] args) { Cat ellie = new Cat("Yellow", "Ellie", "Tuna", "Maddy", "123 Happy Rd", "Maine Coon"); } }