CS 163/164, 🀨 Fall 2019 🀨

Lab 2 - Eclipse and Java Introduction

Thursday, Aug. 29th or Friday, Aug. 30th

Objectives of this Lab

1. Configure zyBooks
2. Install Eclipse and Java on your personal computer (it is already installed on department machines!),
3. get Eclipse set up and running on your Linux account,
4. write a very simple Java program,
5. show you how to submit your programs to the Checkin tab,
6. and learn about preliminary (and final) testing.

Please bring your personal computer for this lab!

Configure zyBooks

In order for zyBooks to talk to Canvas, you need the correct e-mail address in zyBooks. To set up zyBooks, click through to zyBooks by going to the assignments tab on Canvas, and select zyBooks assignment 1. Click the button to open zyBooks in a new tab. If you already activated your zyBooks subscription, you may need to log in. Otherwise, continue to create an account. ONLY make ONE zyBooks account! If you already signed up and it is asking you to pay again, instead log into your zyBooks account and add the email address that Canvas reported to zyBooks (it is probably your First.Last@rams.colostate.edu address). If you can click through Canvas and see an orange submit button in zyBooks, you did it! That button will be used to submit your points to Canvas. Points can be submitted anytime until the Final Exam. Yes, even after the due date, but it will only give you points for what you completed before the due date.

Installing Eclipse

Eclipse makes programming easier by compiling and running your Java programs within a very sophisticated software application. Your TA will show you how to install Java and Eclipse on your personal computer. A personal computer is not required for this course, all work can be done on department computers, but it can be convenient at times to work from home. Here are are few hints:

• Always install the Java programming language before Eclipse.
• Versions of Java and Eclipse exist for Windows, MacOS, and Linux.
• Java is free from here.
• The Java Runtime Environment (JRE) is only what is required to run Java programs.
• The Java Development Kit (JDK) is needed to write and compile Java programs.
• We are currently using Java 8, also known sometimes as version 1.8.
• Now you are ready to download the Eclipse Integrated Development Environment (IDE).
• Eclipse is free from here.

Using Eclipse

For the remainder of the lab, please use the Linux system, if provided. Your TA will help with any problems you encounter.

• To start Eclipse, open a terminal and type eclipse.sh .
• You must do this every time you launch Eclipse.
• Close the window that welcomes you to Eclipse.
• Select the (Window→Open Perspective→Java).
• You can change perspectives as need be to fit your workflow.
• If your perspective gets messed up, you can reset it by going to (Window→Reset Perspective).
• Close the "Welcome" window if it doesn't disappear automatically.
• Create a default comment header with your name and other information by going to (Window→Preferences→Java→Code Style→Code Templates → Code → New Java Files) and putting a line for project name, your name, the class, the date, and your email.

For detailed information on Eclipse, check out the Eclipse website.

Starting the Assignment

Your TA will guide you in creating a project called P1 and class for starting the first week assignment:

• Create a new Java project using the (File→New →Project) and name it P1.
• Right click on P1 in the Package Explorer tab and choose (New→Class).
• Each class in Java has an associated file of the same name.
• Check the box to have Eclipse add main to your program.
• Name it "P1" (Eclipse will add ".java" automatically) and type the code shown below:

Your code should look like this, except with your name and email in the comments:

    // P1 Assignment
    // Author: Cam T. Ram
    // Date:   8/22/2017
    // Class:  CS163 or CS164
    // Email:  eid@cs.colostate.edu

    public class P1 {
         public static void main(String[ ] args) {
              System.out.println("Java programming is great!");
         }
    }
    

• You can now run your program by clicking the green "Play" shaped button on the toolbar.
• Note that the output will appear in the Console window at the bottom.
• You should see the program print a line of text to the console.

Submit your program

Your TA will now walk through logging in to the course website, submitting your code, and viewing preliminary test results. The website allows you to submit programs and get them automatically graded. You should pass the first preliminary test. Read the assignment for P1. Now see if you can add another print statement and pass a second test. The TA will show you how to check the results of your preliminary and final testing, and how to retrieve your code from the Checkin tab.

Grading

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