Lab 21 - ICS 111

ICS 111, Introduction to Computer Science
Lab 21 - Command Line Arguments - December 7

This lab will help the student by:

practicing basic programming techniques.
passing arguments in from the command line
introducing arrays.

Make sure that you logout from the computers when you leave the lab or other persons may see your stuff or use your account to do "bad" things.

Instructions:

To receive credit for this lab assignment, you must be finished by Tuesday, December 7, at 11:59 p.m. After this time you will not receive any credit. Future lab assignments will be due by 11:59 p.m. on the day of the lab assignment.

1. Log in to UH UNIX (Secure Shell in Windows)
    - If you are in the lab, go to the Start Menu, then Programs, and look for 'SSH Secure Shell Client'. If you're at home, a good program to use to connect to UH UNIX is Putty (click here to download). The putty program is an executable and doesn't need to be installed.
    - Host name is: uhunix.its.hawaii.edu
    - Your user name is the first part of your UH e-mail address. If your UH email address is 'frank@hawaii.edu', your user name would be 'frank'. Your password is the same as your e-mail password.

2. Create and edit a file in Pico (Getting Started with Pico), named LabX.java (substitute the X for the lab number- e.g. Lab5.java)

Do the following:

Write a program that will receive input to the main method in the form of arguments. As we know args is an array of Strings.
Copy the whole array to a file that will be called "output.txt"
Print the array to the screen forwards and backwards.
If the user didn't enter any arguments, the program should print "No arguments"
If the user entered only one argument, the program should only print the string once.
Before you submit your code, make sure that your code follows the rules of the Java Coding Standard. Visit this link to look up Java code formatting rules and be sure that your program adheres to these guidelines. At least follow the rules of proper indenting / spacing, making a comment block for classes, making a comment block for methods (main method for this lab), and do some inline commenting to explain what your program is doing. Not doing ALL of these will result in a deduction of points on your lab.
You must follow all of the commenting guidelines. Be sure to visit the link and check that your code follows all of the guidelines. Failure to do so will result in a deduction of points.
* Your program must compile without any errors, and must run properly to receive credit for this lab.

3. Get into Pine (Getting Started with Pine, PDF) and attach the Java (.java) file to an e-mail (See pages 11-12 in Getting Started with Pine, PDF).

Send the file to ics111-lab@hawaii.edu account.

control <J>, then control <T> allows you to browse and pick the file that you wish to attach. Only submit the .java file. Do not submit the .class file.

Your e-mail should have the following subject: lab X / lastname (lab X should be substituted with the lab number, and lastname should be substituted for your lastname... e.g. Lab 5 / Sharritt). Not following this standard will result in a deduction of points.

4. Check the webpage to make sure that the e-mail arrived. Note that this will be sent to the ICS 111 lab address (ics111-lab@hawaii.edu). This one is different from the ics111-homework@hawaii.edu. There are two different ones so we can have homework assignments and lab assignments separate.

Here are the URLs:
http://www2.hawaii.edu/~tp_200/bmf/ics111-homework.html
http://www2.hawaii.edu/~tp_200/bmf/ics111-lab.html

5. Once we (TAs) get the e-mail in our account AND we can verify it on the web, we will grade your lab. For grading policies on your lab, click here...

Link to the Java API - to look up any methods of any class you would like to use.

Link to the Java Coding Standard - to look up Java code formatting rules.