Question

Goal: Apply ideas about availability and overriding methods

Assignment: Imagine that you are a paleontologist that is working on classifying different species of early hominids. While still relatively diverse in their characteristics and abilities, many early hominids already shared some key features, notably, bipedalism.

The class Hominid has already been created for you. This class defines the variables locomotion which has the final modifier, and speciesName which is protected. The class also defines the method describe which prints the species name and locomotion. The class constructor assigns the value of speciesName upon instantiation.

Create two classes, Australopithicus and Homo Habilis that meet the following requirements:

They cannot be inherited.

They Define a String variable era.

They have a constructor method that:

Invokes the contructor method of the Hominid class

Initializes the species name to "Australopithecus afarensis" or "Homo habilis".

Takes era as an argument and declares it as a class property to be defined by the user.

They override the description method by invoking the description method of the Hominid class and then print "This species lived in the era."

$//$ Base class Hominid

class Hominid $\{$

$//$ Final variable, consistent among all hominids

public final String locomotion $=$ "bipedal";

$//$ Protected variable, which might differ between different hominid species

protected String speciesName;

$//$ Constructor for Hominid class

public Hominid$($String speciesName$)\{$

this.speciesName $=$ speciesName;

$\}$

$//$ Protected method to describe the species, can be overridden

protected void describe$()\{$

System.out.println$("$Species: $"+$ speciesName$)$;

System.out.println$("$Locomotion $"+$ locomotion$)$;

$\}$

$\}$

$($THE CODE ABOVE IS WHAT I HAVE SO FAR$)$