/** * This is a constructor -- it simply creates a new Animal (an "instance") that * you can do things with. * * this means "of the Animal you're doing something with." * In this case, we use this to set the state of our new * Animal to the parameters provided when we made the new * Animal. */ public Animal(String color, String name, String favoriteFood){ this.color = color; this.name = name; this.favoriteFood = favoriteFood; hungerLevel = 10; } //These are the methods ("behaviors" of an animal) all Animals should have. /** * All Animals should eat, and let's say that all Animals eat the "same way." * This means that we can define how an Animal eats now, because it applies * to all Animals. */ public void eat(){ if(hungerLevel > 0){ hungerLevel -= 1; System.out.println(name + " is eating " + favoriteFood); } else{ System.out.println(name + " is full!"); } } /** * We want to be able to get the values of all of the Animal's traits. * Because we made our state private, we need to use getters, which * simply return state. * Without getters, nothing outside of this file can see private things! * This is a getter for color! * In reality, we would write getters for name, favoriteFood, and hungerLevel too. */ public String getColor(){ return color; } public String getName(){ return name; } /** * abstract means that this behavior will be implemented later. * For now, we're just saying that every Animal SHOULD be able to move * * void means the method doesn't "return" anything. * This means that you will not get a value back from calling this method. * You can still use void methods to change the state ("traits") of an animal, * like we did in eat()! */ public abstract void move(); }