Recitation 1 for CS160

Recitation R1 - Introduction to Linux and Eclipse
Spring 2014

CS160: Foundations in Programming

The goals of this lab are as follows:

Login to department systems
Discover the class website
Learn to run Linux applications
Get Eclipse up and running
Start on a simple Java program
Learn to submit programs

Logging In

Login to the machine using your electronic ID (same username that you use for RamWeb).
The initial password should be your student ID (same as nine digit number on your RamCard).
Troubleshooting:
- Raise your hand if you cannot login!

You will change you password later in the recitation.

Class WebSite

Start your preferred internet browser and type in the url www.cs.colostate.edu/~cs160.
Look at the syllabus and progress pages.
Find the lab instructions for today.
Open another tab and type in the url ramct.colostate.edu.
Login on RamCT using your EID and password and make sure you can see CS160.

Launching Applications

Your TA will show you how to launch applications and add them to the task bar.
Click on "Activities" in the upper left corner of the screen
Click on "Applications"
Run firefox, gedit, file manager, and a terminal.
The terminal command brings up a window where you can type in Linux commands, similar to using DOS command prompt on Windows.
Use the passwd command to change your password. It is recommended that you change it to your RamWeb/RamCT password.

Using Eclipse

Eclipse makes programming easier by compiling and running your programs in a single step. Your TA will go over setting up Eclipse and your workspace.

To start Eclipse, open a terminal window 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 ever gets messed up, you can reset your perspective by going to Window→ Reset Perspective.
Close the "Welcome" window if it doesn't disappear automatically.
Create a default comment header by going to Window→ Preferences→ Java→ Code Style→ Code Templates→ Code→ New Java files and putting a line for file name, your name, the class, and your email.

Your TA will guide you in creating a project called P1 and class for starting the P1.

Creating a new project:
- Create a new project using the File→ New→ Project, and name it P1.
- Right click on P1 in the Package Explorer tab and choose New→ Class.
- Name it "P1" (Eclipse will add ".java" automatically) and type the following code between the brackets under "main":
  
  System.out.println( "Hello World!" );
Your code should look like this:
```
// P1 Assignment
// Author: Chris Wilcox
// Date:   1/21/2014
// Class:  CS160
// Email:  wilcox@cs.colostate.edu

public class P1
{
    public static void main( String[ ] args )
    {
        System.out.println( "Hello World!" ); 
    }
}
```
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 "Hello World!" on the first line of the console.
For detailed tutoring on using Eclipse, check out the website: Eclipse.

Program Submission via Checkin

Your TA will now walk through logging in to the course website, submitting your code, and viewing preliminary test results.

Remember that this was just setting up for P1 and that there is still more to do before it is complete.