Inheritance - Animal demo

Animal.Java

package animals;

public abstract class Animal {

	private int bones;
	private int age;
	private String colour;
	private int size;
	private int weight;
	private String diet;
	private boolean hasLegs;
	private long cellCount;
	
	public abstract void eat();
	public abstract void shit();
	public abstract void move();
	public abstract void reproduce();
}

Human.Java

package animals;

public class Human extends Mammal {
	//Do need to have implented the abstract methods by here
	
	public Human(int weight) {
	}
	public Human() {
		// TODO Auto-generated constructor stub
	}
	@Override
	public void eat() {
		// Knife and fork
	}
	
	@Override
	public void shit() {
		System.out.println("Shit sideways");
	}
	public void cry() {
		System.out.println("Tears");
	}
}

Mammal.java

package animals;

public abstract class Mammal extends Animal {
//Do not need to implement methods here
	@Override
	public void eat() {
		// TODO Auto-generated method stub

	}

	@Override
	public void shit() {
		System.out.println("Shit");

	}

	@Override
	public void move() {
		// TODO Auto-generated method stub

	}

	@Override
	public void reproduce() {
		// TODO Auto-generated method stub

	}

}

Runner.Java

package animals;

public class Runner {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Mammal matt = new Human();
		matt.shit();
		matt.reproduce();
		while(true) {
			matt.cry(); //Doesn't work because Matt is not a human
		}
	}

}