CS 5JA, Winter 2009
Assignment 1 - Getting Started

Due: Wednesday, January 14, 9:00 pm
Worth: 50 homework points

1. Type in (or copy and paste) the following Java application, and save it as a plain text file called Start5JA.java (or just download it here).

   public class Start5JA {
       public static void main(String args[]) {
           String name = "YOUR NAME HERE";
           System.out.printf("Hi %s. Welcome to Java!%n", name);
       }
   }
   

   • Add comment lines at the beginning of the program (before line 1) that include your name and the date the program is written. (This is IMPORTANT, and it applies to all future programs too.)
   • Replace the String, YOUR NAME HERE, with your actual name.
   • Do not change anything else.
   • Note that Start5JA.java must be the exact name of the source file.
     Careful - some operating system configurations (e.g., Windows default) hide file extensions that are familiar to the system. Be sure that your file is not really called something like Start5JA.java.txt, because it will not work that way. Learn how to configure your system to show such file extensions, and/or how to rename files if necessary.
2. Compile the program to produce Start5JA.class, and execute it to verify that it works.
   • To compile the program at the command prompt, type:
     javac Start5JA.java
   • To execute the program at the command prompt, type:
     java Start5JA
   • If something doesn't work, fix the problem and try again until it does. See our results using the current nonsense name.
3. Turn in Start5JA.java and Start5JA.class here before the deadline.
   • Late projects will not be accepted, nor will we accept your projects by e-mail or other delivery means. One purpose of this first assignment is to get you accustomed to using the turn-in program.
   • Note - we probably will not have you turn in any bytecode files (like Start5JA.class) in future assignments. Here it is just to verify that you can compile your own program. Normally we will just have you turn in source code files (like Start5JA.java), and we will compile them ourselves.
4. NOT FOR CREDIT: do all of the text's Chapter 1 exercises (pp. 32-34), and Exercises 2.1 through 2.23 from Chapter 2 (pp. 65-69). Do not turn in these results, but do save them to help you study for exams.

Updated 1/2/09, by C. Michael Costanzo