SimpleExample/assignment.txt

0. Create a directory in your dir space and copy
   the SimpleExample/*.java files into it.
     mkdir yourDirName
     cp /users/rlr/Courses/530/Src/SimpleExample/*.java yourDirName
     cd yourDirName
   where you put whatever you want for 'yourDirName'.
   Follow the instructions at the top of the Main.java
   file to compile and run it.

1. Introduce some typical errors into the program
   and recompile after each one, to see what
   the error messages look like. (After you see the error msg,
   change it back!)   For instance:

   In Main.java --
   a. change   public class Main
      to       public class main

   b. change   Ant	anAnt, anAnt1; 	
      to       Amt  anAnt, anAnt1;

   c. change   Ant  anAnt, anAnt1;
      to       Ant  anAnt, anAnt1   <- note no semicolon ; at the end!

   d. In the loop creating the ants, 
      Change:    for ( int i = 0; i < numberOfAnts; ++i ) {
      to         for ( int i = 0; i < numberOfAnts; ++i ) 
      (no { at the end of that line).

   e. At the end of that same loop, remove the } .

   f. Add this loop at just before the while loop:
		for ( Ant a : antList ) {
			a.setX( rng.nextInt( 63 ) );
            a.setY( rng.nextInt( 63 ) );
        }
      why doesn't this work?   Fix it by changing Ant.java !
 
   In Ant.java --
   g. In the first constructor, remove the closing } .

   h. For this method definition starting line:
         	public double doSomething ( int i ) {
      - remove the double
      - change the double to void

   i. in the doSomething method, on this line:
         	j = (int) d;    // tell java to convert the double d into an int 
      remove the (int) .
 


2. Add a new class to the program:
   name:                 Chip
   Instance Variables:   ID, x, y, density
   Create a couple of constructors.
   Create the setters/getters.
   Create a printSelf method, to print its IVs.
   Create a method
      incrementDensity( double d )
   that causes the density to be increased by the 
   value passed as the d parameter.
   Change the instructions at the top of Main.java
   on how to compile the program to include this one.
   Then compile it, and run it.
   (Presumably it will run the same, since so
    far you have just defined the new class, not used it.)

3. Add a new ArrayList to Main.java
     chipList
   to contain Chip objects.

4. Create 10 chips, add to that list.
   Assign densities and x,y in some interesting way.

5. Use a for-loop to send the printSelf() message
   to all the Chips on the list.

6. Use the incrementDensity(d) method to change the
   density of a selected set of the chips, e.g.,
   the ones with odd IDs, with density < some value, etc.
   Print the list again after sending them all
   this message, to confirm it worked.