7.2. Setting up the Environment

Learn by Experimenting!

For each of the remaining sections in this chapter, be sure to login to Odin and type out the commands given in each part, taking notes as needed. When you are done, you will have a step-by-step outline for creating and using interfaces in Java. Your notes and will be very useful on upcoming homework assignments and projects. The steps in this tutorial assume that you are logged into the Odin server.

As you work through this chapter, you will write code to properly utilize inheritance in Java using two separate examples.

On Odin, complete each of the following steps:

  1. Use the following command to download and execute a shell script that retrieves the starter code for this tutorial and places it into a subdirectory called cs1302-inheritance:

    curl -s -L https://raw.githubusercontent.com/cs1302uga/cs1302-tutorials/master/inheritance/setup.sh | bash

  2. Change into the cs1302-inheritance directory that was just created and look around. There are two separate folders pertaining to the two examples we will work through in this chapter (animal and person). Take a minute to run the tree command on each of these subdirectories and notice that each one has a separate src folder containing the source code for that example. You can also run tree on both subdirectories to see their contents simultaneously using this command:

    tree person animal

    You should see output similar to the following:

    Starter Code - Output of the tree command

    Each subdirectory within cs1302-inheritance plays a role in the example. Here is a breakdown of the different subdirectories and their roles:

    • person the top level directory for the person inheritance example.

    • animal the top level directory for the animal inheritance example.

    • animal/src is the default (no-name) package directory for our source code for the animal example.

    • person/src is the default (no-name) package directory for our source code for the person example.

    • cs1302, animal, and identity are the named package directories for each example.

    • The three .java files under each directory are the starter code for that example.

    We will work through each of these two examples in the remaining sections of this chapter.