Animal.java

package main;

public abstract class Animal {
	private int numLimbs;
	private int numEyes;
	
	public Animal(int numLimbs, int numEyes) {
		this.numLimbs = numLimbs;
		this.numEyes = numEyes;
	}
	public Animal() {
	}

	public abstract void eat();

	public abstract void breathe();

	public int getNumLimbs() {
		return numLimbs;
	}

	public void setNumLimbs(int numLimbs) {
		this.numLimbs = numLimbs;
	}

	public int getNumEyes() {
		return numEyes;
	}

	public void setNumEyes(int numEyes) {
		this.numEyes = numEyes;
	}

}

App.java

package main;

public class App {

	public static void main(String[] args) {
		Bird oz = new Ostrich();
		oz.fly();
		oz.eat();
		oz.breathe();
		System.out.println(oz.getNumEyes());
		System.out.println(oz.getNumLimbs());
	}

}

Bird.java

package main;

public abstract class Bird extends Animal {
	
	public Bird() {
		super(4, 2);
	}
	public void fly() {
		System.out.println("Flap Flap");
	}
	@Override
	public void breathe() {
		// TODO Auto-generated method stub
		System.out.println("#gasp#");
	}
	
	@Override
	public void eat() {
		// TODO Auto-generated method stub
		System.out.println("Scratch and Peck");
	}
}

Ostrich.java

package main;

public class Ostrich extends Bird {

}